oh no, i wasn't trying to imply you have yourself typed incorrectly.
and i get that it's a good thing...i mean, i'm a 2 myself and you can think of it as self-serving too "It makes me feel better when I help people".
all i'm saying is that i can't see Ti being responsible for that. and i can't really see Ne doing it either.
maybe it's Fi telling Ne to brainstorm through Ti? so like, Fi sets it off, and then you can Ti/Ne on how to help someone. or Fe might set it off.
or maybe it's tertiary Si acting through Fe? it could be any number of things.
my dad is an INTP too, and he loves helping people in a Ti/Ne way. i think in his case, Fe steps in to start the whole thing, but after that, it's all Ti/Ne.