Captain Squeegee. A rare combination of ska and psychedelic rock. Their album To the Bardos! is particularly great, and ranks among my top 5 albums of all time.

The Brotherhood of Dae Han. Southern rock with a hint of ~~black metal~~ metalcore.

Black Bonzo. A modern-ish prog band that sounds straight from the 70s.

Bubblemath. Progressive jazz fusion. Their first album was light on the jazz and pretty low-budget, but their second album, Edit Peptide, is the best in the subgenre, IMO.

Lotus Child. Indie alterna-rock. They only had one album, but it's creative and interesting.

Tyrant of Death coming in at just over 4000 listeners!

https://open.spotify.com/artist/0v9Vjvjg6Swl0ZzJFEersr

He's excellent. If you like industrial metal or the Doom soundtrack you'll probably like ToD. There's no vocals, so I imagine this will appeal to DnB and EDM fans as well.

I recommend Generation Bliss (link for bandcamp because it's not on Spotify.. wtf bro this your best album!)

https://tyrantofdeath1.bandcamp.com/album/generation-bliss

I must have listened to this 50 times

Technically they're just over the 5000 monthly listeners limit (6955), but Xanthochroid is still relatively unknown and my favorite band of all time, so I can't not share them.

Monarch ! the slowest band on earth a French Drone metal band who is heavy as hell and plays so slowly that it's edge between music and noise. Pretty great if you want to set-up a dark-ambience or want to chill out over slow music.

Also they're great on stage and the musicians are accessible like you can talk with them after the concert

I have no idea how to judge the number of listeners, but Norwegian artist Making Marks (formerly mylittlepony) is great.

And Nineteen Forty-Five literally has no bad tracks on either of their published LPs.

Future Unlimited. I'm not sure if they still make music, but I love pretty much all their songs. Their most popular upload has just 40k views. They are just criminally underrated in my opinion, I always hoped they'd make it big.

My two favorites of theirs are Destroyer and Golden.

Joshua Rotten. A few singles, an EP, decent music that simply went nowhere and he hasn’t made anything in years.

Pil & Bue - Norwegian 2-man band, emotive, melodic rock https://open.spotify.com/track/0kVNwwh6CGOoraQY7OBNEY?si=upyFAkKIR4WMqlKCwvQj_Q

Cybernetic Witch Cult - Doom metal with prog and stoner elements. https://open.spotify.com/track/7CYECvyqaE0Q2LqP9klpPq?si=ftVDlzEUSFS-ExUpVxGIrA

horseshoe theory - retrowave/synthwave/chillwave https://open.spotify.com/track/6ac1uMRP1AJxhfyTZLd6s1?si=8rNAQuJTR8Gv2n7-d-gvfA

Two Bad Bricks

Found them through their singer's YT channel. They describe themselves as acoustic stoner rock, which I feel is a good description. Lots of influence from Queens of the Stone Age.

Diamons Dallas Tex Although I'm pretty sure, a guy named Lil Texas is behind it, but I do not have confirmation.

jon allen

200ish listeners a month... Criminal. This will likely be my hip hop album of the year if not the album of the year for me

Argyle Park and their official unoffical sequel AP2. Around 2.5k combined. My favorite song is "A New Wound" which is actually incorrectly listed as "A New World" but it is so unpopular that will probably never be fixed.

Mainlight, Ukrainian Dream Pop/Shoegaze band, 69 monthly listeners: https://open.spotify.com/artist/6imKZQuqvbjC1m5MRFIwG9?si=x87vJ3O_Qp2fPRECrSie9g

Lori Denae - 16 monthly listeners. Kinda Wanna is a great song.

Maida Rose - 1,192 monthly listeners. Harmony of Heartache is great too!

Maybe my favorite band at the moment

Fathom XIX

Https://youtube.com/channel/UCJVgKoi_psT6xj1Ng1NVuwA

Also if you're into pop punk

https://youtube.com/@FourStarsIL

Rocket Scientists - https://open.spotify.com/artist/3cOczMBbwR9ANxjDHpnkBJ

If you're into prog they've got some good stuff.

Nulberry

The Nature Centre - art-pop from Birmingham, UK. They're great!

Subtle

Do they have to be established artists, or can I list just any random artist here from DeviantArt?

Back to the point, they have some great stuff

Squint - https://open.spotify.com/artist/3rSZhCBS6SLmBFzpPxvhr5?si=NtREZv_HT3yiUigQky1Kuw

Moistboyz - The Tweaker

Dean Ween / Mickey Melchiondo is part of the band if that's a selling point for anyone.

Technically they somehow exploded to 5800 monthly listeners, but Valkyrik could use some more love. Last time I checked all their songs were at >1000 plays, even though, again, that somehow changed recently.

Mod Con

Sniffany and the Nits

And The Warlock Pinchers, who broke up like 30 years ago, but if you know, you know.

Dancemyth

Bandcamp for those that prefer.

Sweaty Mammoth without a doubt

Askm3. He really has a unique sound that I like a lot.

Edit: I just realized that dropping his soundcloud like this doesn't highlight him the best. Some of my favorites from him are You Know, Come Over and We Could Be. You might like it if you're into drum and bass.

Pretty sure this guy only has a YouTube

https://youtube.com/@laundryjamz

Walker Kong, with 47 monthly listeners.

I found one of their albums at a record store in Vancouver a few years ago. The band is defunct now, but they're the best kind of weird.

https://open.spotify.com/artist/4OFg0hJQGJ7Z9Qc37EUF7l