The simplest explanation is that ALL the signatures are forged ... because Elijah Cummings couldn’t read or write. :-P
Especially not in cursive.
Although is it forgery only if there is “fraud” or “deception” involved? If a secretary signs the boss’ name, is it OK? I understand it can be.
However now that Cummings is dead, he can’t say that there was no deception. I guess it’s up to the new chairman to reissue the subpoenas?