The bad ones, ranked in order
>Enna, Kyo, Millie, Uki, Reimu, Luca, Hex, Vox, Shu, Ver, Aia, Finana, Aster
These ones are actually bad human beings who make vtubing worse by their existence. Should never have been hired, and they are a blight on the industry.
That doesn't mean all the others are good, or watchable.
Probably the most watchable ones are Pomu, Rosemi, Elira, and Selen.
The others are niche interest that you might catch a passing stream or two.
-- Petra's piano streams or study streams.
-- Finana in collabs can be fun.
-- Mysta, Ike, Sonny, and Alban are annoying males, but they aren't that offensive. Mysta might be the worst of them just because of his mental illness.
-- Maria covers the midnight hours if you're up late and need something to watch
-- Scarle is always doing weird shit, might be worth tuning in for a couple minutes just to see what weird shit she's up to.
-- XSoliel's only good member was fired, but you might like Meloco's ASMR.
-- The new wave of males has "brotuber" appeal (so far). That could always change and they could end up being colossal pieces of shit, who knows.
The unmentioned ones, like Ren, Kotoka, Fulgur....etc basically just exist and are best ignored. At worst they are an annoyance cluttering up a collab.