Good that you want to educate yourself first. Very smart. I see that you're quite observant, too. Honestly, I don't think it's rare at all. I think most of the Provider ladies I know of enjoy being the Dominant one. I think we all do. We all love role playing, too, I think and it's just fun to play games.

If, by a Dominant Escort you mean a girl that will lead you through the process, I think you'd find a lot that are willing to show you the ropes.

If you mean literally one that will show you the ropes, use the ropes and tie you up .. in other words .. a Dominatrix, then yes - ones that do THAT as well as let you have your way with  them ... they are rare.  They exist, but not frequently.  This has to do with the power dynamics of Dominance and submission to a certain extent ... but even more because the typical man (not YOU ... nor anyone else HERE ... but yanno .. those TYPICAL men) that seek Dominatrixes are not usually looking for sex (hard to believe ... but true)

So .. what do you mean by Dominant Escort?    Give us an idea what you're actually looking for and someone here will know JUST the person for you.