Trainer card type distribution for cards that offer universal support for Pokémon of that type. DeNA you gotta help Dragon types out
I'm only including Trainer cards that offer support generally for that whole type (so something like Brock doesn't count for Fighting since he only works with Golem and Onix) and that depend on the Pokémon type, not the energy. So honorable mentions to Irida for water and Elemental Switch for fire, water and lightning, but they work if you use those types of energies with Pokémon of other types.
It's extra rough out there for Dragon types since they depend on other types of energy, and a lot of support, including other Pokémon, restrict their support to Pokémon of that type. Like for example, Baxcalibur lets you ramp water energy, but only to other water Pokémon. Can't ramp a dragon type. I hope with the next set being Rayquaza, DeNA finally eases up on their dragon discrimination
edit: forgot Adaman for steel types