RE T-34:
Sloped armor - The German Mark V Panther employed sloped armor as well, after coming up against the T34s. I believe the King Tiger Mark IVB used sloped armor as well.
But as you said regarding the P47... the Russian version was the Illyushin Shturmovik IL-2. Their airborne tank-killer.
The Germans used a version of the Stuka Ju-87 fitted with 37mm cannon for busting Russian armor - see “Rudel’s Fire Brigade.”
Those examples did go with sloped armor. But fortunately, they used it in a complex, slow, expensive machine. The Germans fell to their own societal idiosyncrasies and of course, to their evil.
And as always with the Nazis. King Tiger, awesome. All 496 of them at 12 mph cross country so big it couldn’t move by rail without swapping to transport tracks. Facing 85,000 T34s bouncing by at 33 mph.
Germans are something else. They either do things perfectly, or they use their intelligence to screw it up in a manner that leaves everyone in wonder. Like nerds that can’t talk to a girl.