[GregNH]

It looks like the signatures were from the same hand. Even the dates are from the same hand. They made the “8’s” look different but the slashes are identical IMHO

[Seizethecarp]

The first two signatures do not look remotely similar to me. Look at the M’s just to start with. The M’s start in a different place and are constucted entirely differently, although the same pen seems to have been used, which one would expect if signed at the same time. The third signature is with a different thicker ink and is unintelligible to me, unlike the previous two.