Electronic Signature (Adobe Pro vs. Digital Signature)

Dear all,

I work for a small non-profit organization developing vaccines against neglected diseases. We have a role as sponsor or funder of clinical trials.

I noticed that there're inconsistencies when it comes to use of electronic signatures. For instance, for signing SOPs and Policies we use
DocuSign (here we also keep audit trail). For signing of training records, CV, job descriptions etc. we use Adobe Pro (for these documents we don't normally generate audit trail).
What application would you recommend to use? As far as I know both fulfill GCP requirements. But is it ok that we don't generate audit trail for some records?

Thank you very much.
P.