Some recent discoveries:
NEMU
These guys seem to draw from a whole bunch of different sounds. There's elements of post-hardcore here, but also a bit of a post-punk tinge, as well as occasional elements that seem more in line with dream pop/shoegaze. Cool stuff that unfortunately seems to be flying under the radar - deserves to be known IMO.
ユウレカ
Another band serving up an interesting blend of genres. Their music contains elements of 90s post-hardcore/math rock/nu-metal. If I had to describe this to someone elevator pitch style I'd say "Imagine a 90s alt-metal take on downy". I dig it.
STRAM
@Jigsaw9actually alerted me to this band's existence. A bunch of their songs very strongly remind me of what I imagine Lillies and Remains would sound like if they had a bit more crunch to them. Recommended for those who like their music gloomy
Ailiph Doepa
Basically fits that niche of bands like Maximum the Hormone / System of a Down and such. Weird and quirky mish-mash of alt-metal with a bunch of other stuff. Still not entirely on board with this myself musically but I'm a big fan of this PV because it's fucking goofy.