Hip-Hop/R&B (since you like Death Grips, James Blake, RGE):

• Dr. Octagon - concept album about an alien gynecologist who comes to earth
• Lizzo - subversive feminine rap that uses "gangsta" imagery
• Marijuana Deathsquads - hard to describe; they're friends with Lizzo
• Madvillain - experimental hip-hop that uses cartoon soundtracks and old commercials in their sound
• Shabazz Palaces - deep, dark hip-hop with big African culture influences
• FKA Twigs - close to James Blake
• GZA/Genius - member of Wu-Tang Clan
• MethodMan - also from Wu-Tang Clan; this debut is pretty grimey
• P.O.S. - Minneapolis rapper, friends with Marijuana Deathsquads and Lizzo
• Tricky - highly experimental for its time; classic trip-hop with unique smoky, club-influenced low-bpm beats
• Clipping - industrial hip-hop that plays with noise and tape hiss
• Run the Jewels - kinda Death Grips-y?

Noise rock (since you like Hella):

• Pissed Jeans - dirty punk rock
• Unsane - ever played the first Tony Hawk Pro Skater?
• Lightning Bolt - bass guitar and drums, plus a mic taped to the drummer's mouth
• RACEBANNON - might be a little too abrasive, but I love this cover
• The Locust - grind-influenced with electronic effects
• Daughters - dissonant post-hardcore where the lead singer sounds like a deranged caricature of Elvis
• Death From Above 1979 - dancy bass guitar and drums, quite abrasive but damn do you get into it

Progressive rock/Krautrock/Avant-Garde Metal (since you like Mahavishnu Orchestra, King Crimson, and Animals as Leaders):

• Black Bombain - long instrumental progressive rock jams; tracks are usually 15+ minutes
• Primus - funk metal, but not RHCP kind; think deranged bass solos; check out "Jerry Was a Racecar Driver" off the link
• Can - seminal krautrock group with a flamboyant lead singer
• Faust - more guitar-driven and contemporary progressive rock, but still kraturock nonetheless in style and influence
• Neu! - krautrock in the vein of Kraftwerk
• Celephais - progressive metal influenced by Lovecraft; it'll take some work procuring this one and I couldn't find a YouTube link, but check out the album I Am Kuranes
• Mastodon - sludge-influenced progressive metal, at least on the album that I linked
• Murmur - metal with an ENORMOUS King Crimson influence

For the record, in case you're wondering why you're downvoted: this sub generally looks down upon others who derogate others' music tastes through phrases like "most people's recommendations lead me to droning bands with no instrumental talent and a sadboy as a vocalist." I get the point you're making, but it comes across as snobbish and that's not an attitude that the sub wants to patronize. Just a heads up for next time.