In order of appearance, left-to-right, top-to-bottom. Only where attribution is required has it been provided:
Hero Image & Edinburgh-Class Image: By Images George Rex from London, England – HMS Belfast / (C35), CC BY-SA 2.0
La Argentina Image: https://www.history.navy.mil/content/history/nhhc/our-collections/photography/numerical-list-of-images/nhhc-series/nh-series/NH-60000/NH-60514.html
General Belgrano-Class Image: By Samuel Scorpio – Own work, CC BY-SA 4.0
Argentine Interwar & Second World War Light Cruiser Projects Image: https://reportedebatalla.wordpress.com/2021/10/29/propuesta-linea-de-cruceros-panamericana/
Australian Interwar & Second World War Light Cruiser Projects Image: By Tzoli https://www.deviantart.com/tzoli/art/Royal-Australian-Navy-1944-Design-Light-Cruiser-761831373
Ersatz Zenta-Class Image: By Tzoli https://www.deviantart.com/tzoli/art/Ersatz-Zenta-Modified-Project-845818359
Monfalcone-Class Image: By Tzoli https://www.deviantart.com/tzoli/art/Monfalcone-type-Great-Cruiser-Revised-Design-846974634
Barroso-Class Image: By Marinha do Brasil – Barroso8, CC BY-SA 2.0
Chilean Interwar & Second World War Light Cruiser Projects Image: By Tzoli https://www.deviantart.com/tzoli/art/Vickers-Export-Design-758A-for-Argentina-820086654
Monfalcone-Class (For China) Image: By Tzoli https://www.deviantart.com/tzoli/art/Monfalcone-type-Small-Cruiser-Design-V2-for-China2-846789663
Lamotte-Picquet-Class Image: By Garlicdesign of Shipbucket, Avaiable Under CC-BY-NC 4.0 License http://www.shipbucket.com/license https://creativecommons.org/licenses/by-nc/4.0/
Thionville Image: https://hajoregiszter.hu/hajoadatlap/thionville_exsms_novara/1939?nyelv=en
Magdeburg-Class Image: By Bundesarchiv, Bild 146-2007-0221 / CC-BY-SA 3.0, CC BY-SA 3.0 de
Graudenz-Class Image: By Raphodon – Own work – photo Archive navale, CC BY-SA 3.0
FK Designs Image: By Maomatic of Shipbucket, Available Under CC-BY-NC 4.0 License http://www.shipbucket.com/license https://creativecommons.org/licenses/by-nc/4.0/
Emden Image: https://www.worldwarphotos.info/gallery/germany/kriegsmarine/emden/san-diego-30/
Leipzig Image: https://www.worldwarphotos.info/gallery/germany/kriegsmarine/leipzig/leipzig-kopenhagen-41/
M-Class Image: By Maomatic of Shipbucket, Available Under CC-BY-NC 4.0 License http://www.shipbucket.com/license https://creativecommons.org/licenses/by-nc/4.0/
Q-Class Image: By Maomatic of Shipbucket, Available Under CC-BY-NC 4.0 License http://www.shipbucket.com/license https://creativecommons.org/licenses/by-nc/4.0/
German Interwar & Second World War Light Cruiser Projects Image: By Earl_of_Arland of Shipbucket, Available Under CC-BY-NC 4.0 License http://www.shipbucket.com/license https://creativecommons.org/licenses/by-nc/4.0/
KH-1-Class Image: By ALVAMA of Shipbucket, Available Under CC-BY-NC 4.0 License http://www.shipbucket.com/license https://creativecommons.org/licenses/by-nc/4.0/
Elli Image: https://www.navalanalyses.com/2016/12/elli-cruiser-of-royal-hellenic-navy.html
Costanzo Ciano Image: https://stefsap.wordpress.com/2015/11/04/the-regia-marina-costanzo-ciano-light-cruisers/
Italian Interwar & Second World War Light Cruiser Projects Image: By Enrr of Shipbucket, Available Under CC-BY-NC 4.0 License http://www.shipbucket.com/license https://creativecommons.org/licenses/by-nc/4.0/
Taranto Image: By Dr. Hans Andreas Schönfeldt – This file was donated by Europeana. It is part of the user generated content in the Europeana 1914-1918 collection.In accordance with the Europeana 1914-1918 terms of use, the owner of the object has also released any rights that they may retain under the CC BY-SA 3.0 license, this file is displayed as such on the Europeana portal., CC BY-SA 3.0
Etna-Class Image: By ALVAMA & Enrr of Shipbucket, Available Under CC-BY-NC 4.0 License http://www.shipbucket.com/license https://creativecommons.org/licenses/by-nc/4.0/
Kai-Agano-Class Image: By BB1987 of Shipbucket, Available Under CC-BY-NC 4.0 License http://www.shipbucket.com/license https://creativecommons.org/licenses/by-nc/4.0/
Japanese Interwar & Second World War Light Cruiser Projects Image: By Tzoli https://www.deviantart.com/tzoli/art/The-Anti-Aircraft-Oyodo-779197354
Eendracht-Class Image: By ALVAMA of Shipbucket, Available Under CC-BY-NC 4.0 License http://www.shipbucket.com/license https://creativecommons.org/licenses/by-nc/4.0/
Babur Image: By Novice & K.W.Vestergaard of Shipbucket, Available Under CC-BY-NC 4.0 License http://www.shipbucket.com/license https://creativecommons.org/licenses/by-nc/4.0/
Almirante Grau-Class (1973) Image: By Lswarte – Own work, CC BY 3.0
MLK Designs Image: https://www.secretprojects.co.uk/threads/russian-post-war-aa-cruiser-project.20557/
Russian Interwar & Second World War Light Cruiser Projects Image: By Karle94 of Shipbucket, Available Under CC-BY-NC 4.0 License http://www.shipbucket.com/license https://creativecommons.org/licenses/by-nc/4.0/
Project 65-Class Image: https://wiki.wargaming.net/en/File:Project_65_1_zpsudtejbnw1.png
Chapayev-Class (Project 68) Image: By Svch433 – Own work, CC BY-SA 3.0
Project 84-Class Image: https://www.secretprojects.co.uk/threads/russian-post-war-aa-cruiser-project.20557/
Méndez Núñez-Class Image: https://naval-encyclopedia.com/ww2/spain/blas-de-lezo-class.php
Project 124-Class Image: By Toryu84 https://www.deviantart.com/toryu84/art/Crucero-N-124-A-941603934
Spanish Interwar & Second World War Light Cruiser Projects Image: By Enrr of Shipbucket, Available Under CC-BY-NC 4.0 License http://www.shipbucket.com/license https://creativecommons.org/licenses/by-nc/4.0/
Taksin-Class Image: By Kingpin6100 of Shipbucket, Available Under CC-BY-NC 4.0 License http://www.shipbucket.com/license https://creativecommons.org/licenses/by-nc/4.0/
Caroline-Class Image: By William Murphy – https://www.flickr.com/photos/infomatique/47456373772/, CC BY-SA 2.0
British First World War Light Cruiser Projects Image: By Hood of Shipbucket, Available Under CC-BY-NC 4.0 License http://www.shipbucket.com/license https://creativecommons.org/licenses/by-nc/4.0/
British Interwar Light Cruiser Projects Image: By Tzoli https://www.deviantart.com/tzoli/art/Design-K-25F-Light-Cruiser-565846342
Ceylon-Class Image: By Photo: Royal Navy/MOD, OGL v1.0
Bellona-Class Image: https://natlib.govt.nz/records/22782749
Minotaur-Class (1944) Image: By Börje Dilén – Finna: hkm.HKMS000005:km0000muuv, CC BY 4.0
Neptune-Class Image: By Garlicdesign of Shipbucket, Available Under CC-BY-NC 4.0 License http://www.shipbucket.com/license https://creativecommons.org/licenses/by-nc/4.0/
Minotaur-Class (1947) Image: By Deskjetser of Shipbucket, Available Under CC-BY-NC 4.0 License http://www.shipbucket.com/license https://creativecommons.org/licenses/by-nc/4.0/
British Second World War & Postwar Light Cruiser Projects Image: By Bombhead & K.W.Vestergaard of Shipbucket, Available Under CC-BY-NC 4.0 License http://www.shipbucket.com/license https://creativecommons.org/licenses/by-nc/4.0/
CL-154-Class Image: By Tzoli – https://www.deviantart.com/tzoli/art/The-Super-Atlanta-Scheme-1945-Variant-2-867019655 This site page states "I place this illustration in the public domain", Public Domain
American Interwar & Second World War Light Cruiser Projects Image: By Dalamace of Shipbucket, Available Under CC-BY-NC 4.0 License http://www.shipbucket.com/license https://creativecommons.org/licenses/by-nc/4.0/