It's awesome to see that you're into thrash! It's my second favorite style of metal, just behind groove, which often gets lumped in with thrash - often, there's a nice blend of those two styles.
For the more modern thrash bands, my favorite is from Spain - a band called Angelus Apatrida. They have 5 albums out as of now, and they're all incredible. After that, Evile, Havok, Warbringer, freaKings, Battalion, Traitor, Hatchet, Harlott, Bonded by Blood, Dust Bolt, Game Over, Terrifier, Total Annihilation, Anialator, Alkoholizer, Chemicide, and Nervosa (all-female band) are just a few off the top of my head. Plenty of great stuff to check out!