Oh man, too many to list! There was a (mostly) import CD shop in suburban Chicago that wasn't too far from where I worked. I went in there weekly from 1997-2007. The owner turned me onto a lot of great bands, mostly from outside of the US. He moved to Colorado in 2007, but I still check his website every week. There are tons of bands I've never heard of that I'll check out. Here is a link to his store. I always check out the New Releases and Coming Soon tabs.
https://www.impulsemusic.com/new/
Other that that, here are a few I have been listening to lately:
The End Machine - original Dokken minus Don
Whitesnake - Flesh & Blood - their latest...really good, IMO
Brainstorm
Bloodbound
KK's Priest - KK Downing and Ripper Owens
The Wildhearts
Helloween
YY Not
Voodoo Circle
Temple Balls
Sweet Oblivion - Geoff Tate and an Italian band....sounds like early Queensryche
Smith/Kotzen - Adrian Smith and Richie Kotzen
Shinning Black
Pyramaze
Primal Fear
Kamelot
Iron Saviour
Down 'N' Outz - Joe Elliott (Def Lep) and guys from the Quireboys....good 70s style rock
Inglorious
Gotthard
Dirty Honey
Dirty Shirley - George Lynch on guitars
Black Swan - Robin McAuley on vox and Reb Beach on guitar and Jeff Pilson on bass
Crown Lands
Klassick '78 - songs written in the vein of KISS from the Destroyer area
Crazy Lixx
Rhapsody of Fire - symphonic metal from Italy
Angra
Edu Falaschi - former singer for Angra
Kreek
That should be enough to send you down the rabbit hole!