As an unashamed fan of this music genre (with strict limitations) I think there is a very good reason that SRV is put forward the definitive blues-rock guitarist. Lots of people will pick the same track, but SRV’s Little Wing is just sublime, imo.
Plus of course you could also sensibly cite just about any modern rock band, since it all stems from the 60’s “white boy blues” movement – Cream, Led Zep etc etc.
Couple of excellent british bands that are well worth seeing live –
The Hoax will hopefully play again soon-ish The Hoax three man one guitar thing
Plus Larry Miller Larry Miller live – who is not only a terrific guitarist, but also exceptionally personable, entertaining and likeable. And a massive Rory fan too.