That is the biggest problem with USB-C IMO. The ports can all have different capabilities and it's not always obvious what they can do.

For the most part though it seems they've settled on Thunderbolt, Charge, and bog standard ports. Are there any that do Thunderbolt + Charge?

It's a shame about the name because the Thunderbolt icon would be perfect to indicate a charge port. Instead we're stuck with a little plug icon that is usually isn't discernable.