Though the Amiga had some high NTSC/PAL resolutions, most games were on 320x200 and 320x256 respectively so they can look pixel perfect gorgeous on a 240p RGB CRT or RGB SCART TV :
Amiga A500: A520 S-Video Mod - Zenithia
Commodore monitor cables and cable for Amiga monitors and video
Cable Kabel Lead Av Luma / Chroma C64/128/16 4/116 Monitor Commodore 1084s 4 | eBay
S-Video/ S-VHS to RCA Y/C Luma Chroma Adapter Splitter Cable 6" / 15 cm
Commodore monitor cables and cable for Amiga monitors and video
Commodore C64 & C128 Chroma, Luma & Audio Cable
I've been doing some "upgrades" on my original 1982 KU-14149HB C64 PCB. Heatsinks, BWACK SKS64, TEBL modulator replacement, TEBL LumaFix (used as a Chroma/Luma bypass), new electrolytic and ceramic capacitors. It also
Show us your Workbench! - AmigaLove
Hold-And-Modify - Wikipedia
Amiga 1200 - S-video mod and refurb - retrohax.net
Blown away with how easy it was to get an Amiga 500 from '87 online and surfing the web (with some help from a PiStorm) : r/amiga
Finally got color on my C64 (needed to combine Luma and Chroma with a splitter). Why is the text weird when I do [Commodore + 1] to change its palate? : r/c64