Are all the forms in choy li fut original forms or do any come from any other styles of kung fu?

Question

Specifically the Doc-Fai Wong lineage.

Answer 1

It is doubtful the forms are exactly the same as the two masters CHOY and LI originally taught them as each head man would make changes based on his own experience or on things he didn't understand because they were never explained fully.

that they borrowed from other styles is also highly likely.