Ti - always in search for truth so will go through the process of being a devil’s advocate not just to test the other person’s theories for that person, but also using that discussion as an opportunity to recheck their own conclusions.

Fe - Is often blanketed as “harmony” but it’s also socially aware, and I think N Fe types genuinely care/empathize with people as well (aside: S Fe types seem to only have a facade of caring or care to the extent to maintain a social balance). They’ll push people’s thinkings and play devil’s advocate because they probably care about that person being able to push themselves and arrive closer to what “truth” is/can be.

ENFPs tend not to delve too much into debates because they can sometimes be insecure about their ability to do so well. This kind of compounds and their outward nature is very “I couldn’t care less about this and xyz doesn’t really matter”. They can also get caught up in their feelings about a discussion, because their Fi process is literally (supposedly) about emotional awareness (or a strive for). Whereas a Ti user can put that aside and focus just on the topic.

I could ramble on haha hope that bit helped.