I know there are several 1.20 launchers of eagler based Minecraft, does anyone happen to have them and are willing to share them?

Yes- I have 1.8, 1.9, 1.12 and 1.20 all on my website that gets 180+ views daily- https://minecraft194eaglercraft.weebly.com/

u cant join servers on 1.20 tho…

Yea, it's only for singleplayer or shared worlds currently, but maybe in the future.