Ok, got Cranach's in (plus some more "famous" signatures, about 10 more). Cranach's might be my personal favorite signature of the lot. Dragon imagery, minimalism, cool backstory.

There were no SVGs of it available online so I had to trace a PNG but Claude handled that like a champ with a combination of imagemagick and potrace:

  magick cranach-autograph.png -colorspace Gray -threshold 70% cranach.pbm
  potrace cranach.pbm -s -o cranach.svg --tight --alphamax 1.0 --opttolerance 0.5