

I use two: Namecheap and omg.lol.
Admittedly omg.lol isn’t a traditional registrar, but they do give you a domain name and other stuff (I don’t use most of it), but it’s $20/yr
Namecheap varies, but last I checked it was a bit cheaper. Not by much, maybe $15/yr for my .monster domain?
Is there a reason to be concerned about the blocking anywhere besides email? I can’t think of any, but I might not be thinking of some usecases