Repeatedly Auto-Updating Text

I find myself newly being expected to do production-level repetitive text edits to Figma layouts. Until I find a new position, I was hoping there’s a method or plugin to relieve some of the tedium and human error.

CopyDoc seems decent, but my company would spend a year doing a tech solution review, even if they would agree to pay for it.

I can’t use the Ditto and Google Sheets Sync plugins with the marcom staff as we can’t use those sorts of outside file-hosing systems (financial sector).

Text Porter doesn’t look like it would accommodate my needs.

I’m designing for a heavily templatized CMS. I would love to load in a new text (or spreadsheet) doc and automatically update existing text, and do this repeatedly.

Can anyone recommend a workflow (with or without plugins) for this sort of tedious work?