I'd probably just call it progressive rock. They're extremely technical but I dunno if I'd call it math rock.

But if you like that technical playing, here's some math rock/adjacent artists to check out:

Polyphia

Standards

Yvette Young (Covet, but TBH I like her solo stuff a lot more)

Plini

Chon

corto.alto

I'm less into the heavy stuff so I can't be too helpful if that's what you're after. Post Rock is often in the heavier side but is usually less technical.