I just voted for Del Toro (I like to vote in just one person) but I think Lipo is the other one able to win a GT in the future.
Del Toro will win a GT, there is zero doubt in my mind about this. He made a huge leap this year and I expect another leap (a little bit smaller) next year (a bit like Vingegaard. Huge leap in 2021 and another leap in 2022).
For me, he will be the third best GT rider in the world next year. He is probably the number one favorite to win the Giro next year IMO.
Yes, at the moment he looks more like a puncheur than a climber but he lost the Giro due to lack of tactical awareness, not because he was weaker than Yates. In fact, he was clearly better than Yates in almost every stage in the Giro.
Lipo - He has a good TT and he is very strong in the high mountains. He is also a "late bloomer" (in this era) IMO and will probably reach his best level between 2026-2029.
IMO (unfortunately) Almeida will never win a GT. He gets sick very easily, has too many limitations and he probably could win the Giro 2026 if both Del Toro and Vingegaard weren't there but I believe one of them will be there.
Seixas? Please, he is just 19. Wasn't dominant in Avenir. Let him improve in the high mountains first. Remco was the best junior ever and will not sniff a Tour (despite being a GT winner). I will wait 2 more years.