I don't know a lot about the Retro Lite CM4 but it certainly looks like a very interesting option. I saw a little bit about it back in 2020 but it looks like it's finally near release time. The screen and build quality/design look pretty good.  Check out the video below:  https://bitbuilt.net/forums/index.php?threads/retro-lite-cm4-a-stonededge-and-dmcke5-collaboration.3934/