They are:

Chris Parker / Electronics, Synths, Programming, Acoustic Guitar, Percussion, Effects Androo O'Hearn / Vocals, Acoustic Guitar David O'Hearn / Lead Guitar, Acoustic Guitar, Guitar Synth, Vocals Christopher Jackson / Rhythm Guitar, Acoustic Guitar, 12 String, Electric Guitar Jeff Plant / Bass Guitar Matt Thompson / Drums

Tracklist:

Sacred Geometry Beneath the Serpents Unspeakable THEY Moving Forward Geometric Reprise Swallow Black Rain Ulterior Motives Down in the Park Lost and Found Moth Pseudogray

Style: Psychedelic/Prog/Rock/Metal

Similar styles: Cynic, Devin Townsend, Death, Gojira

https://they3.bandcamp.com/album/unspeakable