Look up JBP Wave by Akira The Don, if you like Jordan Peterson lectures, they're pretty good.
Take control by Kream
I don't know if you consider this motivational but I liked it.
Here's also this.
All the mixes by Cercles are amazing, good flow and upbeat for long grinding sessions
Plus most of them have beautiful nature backgrounds so if you throw it up on a side screen, you can have some nice grass to imagine touching while you work 😂
https://www.youtube.com/@Cercle/videos
Not motivational, but here are some binaural beats to decompress after a long session and get into relaxation mode before bed
I swear by this as a meditation mix-in during really hardcore working periods
(I know lots of people work while listening to this too, that's also worth a try if you need some variety from the more upbeat stuff)
https://rumble.com/playlists/PBGdFHJ8yMk
@Derek Ross, check out @billiv on @Wavlake, he’s got some of the best motivational and feel-good tracks on Nostr. Dive into his catalog. You’ll love the energy.