Hi @Chele
Welcome to the Sonos Community!
Historically, projectors haven’t provided ARC. Combine this with their required location, and they did not make good companions to sound-bars. Things are now changing for the better.
I can’t recommend any specific projectors, but what you’re looking for is called a short-throw projector. I did a quick search for “short throw projector earc android” and while I didn’t see any that mentioned both Android and eARC (in their product titles), I’m sure I would have found a few if I looked at each product’s details - I see no reason why you wouldn’t be able to find a few examples to compare. Or, there’s a huge gap in the market!
I can tell you that laser-bases projectors are better than lamp-based ones, in general (though there may be extreme examples where this isn’t the case).
The other community members are free to recommend, of course.
I hope this helps.