ECDSA is one of the most intellectually offensive constructions in modern cryptography.
It's ugly.
It's hard to thresholdize.
Indeed, every research grant and venture capital dollar spent on it is, in a final sense, a theft from better cryptography.
So what originally got me thinking of DSA as mangled Schnorr (beyond the obvious patent avoidance issue), was a version of ECDSA someone put up at RWC 2016.
Its a little hard to read, so I just asked Gemini for a cleanup version with Schnorr and Elgamal next to it.
Its not a perfect fit. But its kinda interesting.