Just for fun and curiosity, I connected my MiSTer to my CRT via an HDMI to Composite cable. The video and sound quality was surprisingly good except for parts of the screen being cropped off. I recorded the video with video setting #6 - 640x480@60. After recording the video I went back and tried #2 - 720x480@60 and I think it may have fit the screen a bit better but not perfect.
https://youtu.be/_DFcNxaS4G0
ao486 - #6 - 640x480@60 (left and bottom cut off)
ao486 - #2 - 720x480@60 (bottom cut off)