I tend to think the best option is if there’s two flag poles is the original Pride flag and the trans flag should be flown to show solidarity. But either progress flag is good when you don’t have space, I’m flying a progress flag right now.

The Pride flag by itself has been co-opted by capitalists and some TERF organisations. So seeing one by itself can be suspicious.

(Also only tangentially related I think the gay flag with the pink triangle on black and the lesbian flag with the black triangle axe and purple background go much harder than the newer progress flags for those groups)