I'll answer the second question first: Yeah, as I posted earlier I'm no longer subscribed to Haachama. I really liked her last year, but as I mentioned before I'm only really interested in the real persons behind the avatar, not into their roleplaying. I really loved Haachama's English Talk streams, but she doesn't do them anymore. Furthermore she now is roleplaying 100%, she doesn't talk about her real life at all anymore. I still think Haachama is closest to me, but just because she is like me doesn't me I'm interested in watching her. I gave her 3 months to return to old normal self, but in the last months she made it pretty clear she isn't interested in that anymore, so I kinda gave up on her.
I still watch several of her videos, but usually they just make me miss her old self, so I can't really enjoy them.
Charlotte Suzu is one of my new favorites. She's definitely my favorite among all the English-speaking Vtubers. Who is going to take Top 1 of all is a harder question, though. I was thinking of making a ranking, but that list will really only work if I write 2-3 sentences about each. Because I like different Vtubers out of different reasons. I'm not really the type who turns into a fan of one particular Vtuber. I'm rather looking for interesting content, so for me it depends stronger on what content is produced, what game is being played, what is being talked about, etc. and if Vtubers do a lot of content that interests me, then I'll watch and like them more.
Haachama was kind of an outlier here, because I actually fell in love with her last year. But after feeling love sick for several months because she was basically gone (and I don't even mean her long breaks, but rather that her old self is gone), I mostly got over that.
All the Vtubers I enjoy watching right now I'm not in love with at all. I find Charlotte Suzu very very cute, but I'm not in love with her. There several other Vtubers whose content I check regularly: Korone, Fubuki, Pekora, Kiara, Coco (Meme Review Only), Subaru (Clips only, unless she plays a really interesting game like Project Zero and Undertale), Utako (ASMR/English streams only), Risu (clips and talk streams), Patra (ASMR), Noel (Duolingo only) and some lesser known ones. You could say they are all my favorites, but I all like them out of different reasons.
But I still watched Flare's Everhood LP because even though she's not among my favorite, the game is just incredibly fun to watch. In fact she ranked up just because she played that.
So yeah, as said, I go more by content produced than the Vtuber as person. Would be much easier for me to rank the different types of content than the Vtubers themselves.