Yeah, stick with Plugshare. It's got all the tools and information you want. You can even "share" a location straight to the nav from the Plugshare app.
This is one of those "be careful what you wish for" situations. The amount of scrolling, zooming, and filtering I do on Plugshare would not be fun via Tesla nav. There's also an awful lot of information to look at when looking for a non-Tesla charger. It's much easier to just use my phone.