Speaking from a toxicity standpoint on WG.
The Zoro/sword fanbase here is the obvious answer. A prime example of herd mentality, half the users can copy and paste the same reply for a month and they wouldn't miss a beat. The upside is this fanbase produces some funny content from it's toxicity. I'll see an occasional post here or there that can genuinely make me laugh.
That's where the "Yonkou fanbase" comes in, on avg this fanbase comes off as the most whiny, it's just constant crying, with no real satire. I just see a lot of lame posts tbh. They aren't as triggered as Zoro fans, but they lack any humour.
As for the Admiral fanbase or those affiliated with it, this one produces some hilarious posts while keeping the keyboard smashing to a bare minimum, gives you the feeling the avg age must be older, atleast with the more prominent posters.
Sanji fanbase I just feel bad for them here at this stage of the manga, don't even know what to say. They're in an abusive relationship.