Really though, the pressure should be from Sané Sterling & Bernardo Silva.
It should not just be Jesus plus Aguero taking two places it should also be Jesus vs Aguero, fighting for one place whilst Sane Sterling Silva DeBruyne Silva Foden Diaz & imo Pat Roberts are all considered for the other attacking places.
Also, we are judging all this in context of Pepball rather than football.
If we really wanted another option up front to best give us a chance of winning trophies, it wouldn't be Mbappe or Sanchez, it would be Diego Costa.
Then we can play any style. We have the players to feed & play off a traditional centre forward, like we've never had before.
If we truly wanted to cover all the bases, we'd buy a proper cf not another tricky shortarse.
If we were still playing a 433 then I'd agree. But in the 352 we've seen through much of preseason, I'd suggest that any of the other players you list would be seen as out of position in those front two roles. That said, I still think there should be a place for the 433 as 3 CBs seemed overkill against West Ham.
I think I have heard some Llorente rumours. Can't help but feel he'd end up as more of a Bony signing than a Dzeko or Negredo though.
I'd also quite like to see Nmecha given an opportunity or two this season. He's not nearly as good technically as some other academy players, but he seems to have a knack for scoring and he should get chances aplenty from the creative talent we have.