Vocaloid fans - Either the biggest coomer imaginable or a 13 year old Tumblrite that:
* Hates men
* Only came on board for the unfunny "Miku says trans rights" ebook meme accounts on Twitter and that either cancel pixiv fanartists
(that have been around since the community's inception) into DFE'ing or artists for writing songs about dark subject matter.
* Cancels people over pirating a $250+ piece of software.
Usually their tastes in Vocaloids aren't good, or they've made a terrible sounding cover of a pop song using the liquid ass English voice banks. Chances are, if they aren't a 13 year old socially retarded girl, or a 30 year old coomer, they're probably a trooning out Guilty Gear Strive Bridget-main that is still coping about people saying that the game's community sucks and Daisuke is a hack. The community should have ended itself after the last MikuExpo (funded by Crunchyroll) had the absolute Fyre Festival-coded idea to use a flatscreen LCD panel instead of holograms. As if Ashnikko adding Hatsune Miku to one of their songs wasn't already enough of a death sentence that the community should've gatekept harder.
Dream Theater fans - They either circlejerk about Mike Portnoy and/or their favorite video game is either equally pretentious shit like The Witness or The Talos Principle. Probably a schizophrenic.
Skrillex (nu-Dubstep) and EDM fans - They will genuinely look at some random schmuck's YouTube dubstep remix of something like Toxicity by System of a Down or Sweet Caroline, and then dare to call it kino when it completely goes against the tone of the original and sounds like it's from someone who should be legally barred from accessing FL Studio.
Bad Omens fans - Not a terrible band all things considered, but their fans either tend to be really fucking creepy stalkers with ADHD Tiktok brainrot (if a women), or a dude that either listens to anything or simply want to get laid. Their band members quit social media because of these freaks. Probably as autistic as Geowizard. I see people comparing Bad Omens fans to Deftone fans for obvious reasons, they probably could beat Steve Lacey fans in a fight of who remembers the least song lyrics.
Bring Me The Horizon fans - There's more people who get into debates about which different sounding album is the best, and there's probably more camps like that then there are genders. Likewise, their female fans at least can be put in a similar camp to Bad Omens fans. If they're someone like Melonie Mac who listened to them circa That's the Spirit, they have zero media literacy (not even in the Tumblr way, they simply never listened to any of their stuff before and then gets mad over social media posts that are less controversial than their old deathcore albums). If you're a dude, then you either had drug problems or are in the same mental health camp as Nine Inch Nails fans.
Imagine Dragons fans - The less said about this the better, but they're likely safe-edgy Redditors that think they're badass while being Moistcritikal subscribers and worshiping a Mormon band.
Lostprophets fans - You send a love letter to a literal infant annihilator, a washed up baby rapist with a cocaine addiction if you will, or are someone who doesn't listen to them anymore for obvious reasons.
Mr. Girl fans - Refer to Lostprophets fans, but with the addition of CSAM addiction being used as a "joke". If you listen to his songs outside of the Dream meme edits (where it's being done in spite of him), you probably should stay away from schools.
Ninja Sex Party fans - You either wish The Lonely Islands were back, or you're a retarded tumblrfag who's underage who really loves Game Grumps for some reason, which in of itself should be the biggest red flag.
redditor and/or a tf2 brony
Or someone who spent a little too much time playing Toontown Online or that thinks Conker's Bad Fur Day's soundtrack is absolute kino with a smiley ball rating.
Maroon 5. Their shit is "popular" and Adam Levine has his face plastered everywhere, but I don't think there are 10 people in the entire US, including Adam Levine himself, who could name all the other members of the band, or pick them out of a lineup.
I vividly remember my elementary school teacher (Who looked like a wine mom) being big into that kind of stuff back when Pandora was a thing, and she'd play fucking Maroon 5 during quiet reading time. That shit was so fucking annoying and I couldn't focus on reading because I just found the music corny and obnoxious.
So I guess I associate Maroon 5 fans with vapid wine moms now.