it's just all of what people have posted

I'm on the fence about that but underneath all the synths, the Locust have absolutely insane and spastic technical grind. Rolo Tomassi rely on synths too but their mathcore is much more apparent.

Currently relistening to that Ion Dissonance album, and while it's pretty exhausting and mathy for the sake of being mathy, god damn is it intense. One thing the most brutal of mathcore has over grindcore is just has spastic it is, which ratchets up the intensity, even if it is at the cost of accessibility.

Their album Cursed is pretty cool, one of deathcore's best.

So Psyopus - Our Puzzling Encounters Considered is off the chain with wank, if we're talking exhausting math ass ****, they'd have to take the cake. I dunno if they're guitarist even does anything aside from lightning finger taps.

It's cool though.

It's entirely possible that this is the first mathcore I ever heard, and one of the first metalcore songs in general. Still a pretty good tune and that rhythm guitar they keep going back to is one of the high points of the genre. Too bad they generally cross so far into wank territory that it kills some of the intensity.

No one wanks like Brain Drill though

I bought their first album when it came out purely on the basis of their name. Was decent but disposable but also kinda funny in just how ridiculously wanky it was. I remember digging this song though.

Also, Brain Drill were somehow involved in a discussion that led to me hitting on an obvious lesbian.

In regards to the list, no matter how much love I have for the Norma Jean album, I dunno if it's mathcore in the way everything else is. So we could knock that one off. Psycho***ist I think is closer to all the extreme jazz metal than mathcore even though both if those are abundant, can knock that off too. The Locust sure ate spazzy but probably not deemed mathy enough for a top list.

I bolded Genghis Tron but I think Rolo Tomassi could also be in the list in that spot, I'm definitely pushing for one of those, they're both among the top artists in the new age of mathcore. Same with the Number Twelve... They push the boundaries.

BTBAM rules but I wouldn't personally lump them into the mathcore boat. If I were intelligent enough I'd talk about how I think mathcore and progressive metalcore differ but you know, I'm not.

Could you post the whole list in the OP? I gotta listen to a bunch of this before I can talk about it.