Another INFP but years of management training has made me funtionally a J and I get really annoyed by my P side. So I pretty much operate as a J most of the time now, which takes more effort but rewards me with lower anxiety. I am hard introversion though. So mediator/advocate.
Funny enough, I just started a long course of training at work that does a deep dive into all this, so if I'll report back if I've learned anything cool. The most interesting thing I discovered in the first session is T's instinctively want to win at all costs, and S's tend not to like abstract art very much.