So happy to see the rec for Mighty Sam McClain, he was terrific. I’d second ‘60’s and into early ‘70’s Paul Butterfield too. Another guy you might check out is Joe Louis Walker, try Live at Slim’s vol 1 or vol 2.. From Paul Rishell & Annie Raines try Swear to Tell the Truth (listed as by Paul Rishell). From Ronnie Earl try Grateful Heart with healthy doses of David Fathead Newman sitting in.
One more, Pacific Northwest session guitarist Terry Robb tends to share a lot of styles on his releases. One I keep coming back to is Heart Made of Steel.