This is a good question. I generally “insert picture from file” of my scanned signature, and then print it to PDF. On some Judicial Council forms, I just use “/s/ My Name” and it hasn’t been rejected.
But CRC 2.257 (California Rules of Court: Title Two Rules) specifies a detailed procedure for electronically-filed documents not signed under penalty of perjury (including stips), which includes that the opposing party ink signs (and you keep that original), and their electronic signature on the filed copy has to be unique and verifiable (see link for details).
If you have an electronic signature provider like DocuSign, I would just use that once everyone is ready to sign.
Another vote for DocuSign. Used it recently getting forms signed by Uni professors, Dean, admin, etc. and it happened it record time.
Their website says they have a free plan if all you need to do is sign documents.