Bomb Rush Cyberfunk is a music focused game and god damn but it is funky. State of Mind and Condensed Milk are my favorites but the range is wide and excellent. No two songs really share the same style.

If you're a metalhead, Metal: Hellsinger won a bunch of best music awards with such offerings as Stygia and This Devastation. It's not instrumental, but it's worth a listen and if you like what you hear it's worth a play as well. Think if Doom was a rhythm game.

Generally speaking, all of the Persona soundtracks are also top tier ambient chill tracks, especially so if you've actually played the games and have an emotional connection to these songs like myself. Persona 5 is a little more generally upbeat but I like it the best, but P4 and P3 have plenty of low key jazzfunk. I don't have specifics to recommend here but know that all three of the P3/4/5 soundtracks come with my seal of approval. EDIT: I have specifics to recommend here. Persona 5 - Rivers in the Desert Persona 4 - The Poem for Everyone's Souls ( <- This one appears in all three games with minor differences and is close to what I expect you're actually looking for from this thread) Persona 3 - Living With Determination