Here is a pretty basic workflow that has served me well over the last couple of years. Nothing fancy, just a simple way to log the various contacts I have in my professional life.
It asks for a bit of input about the contact, what you discussed, and creates a markdown file in drafts. At the same time, it appends to a running log in Dropbox.
May be of use to someone.
https://workflow.is/workflows/b96ac35ccf7441efaf103aecbdd5228a