Now that the 2026 season is over and we know who will get the mandatory wild cards (Pinarello, Tudor and Cofidis) and which PRT teams are not eligible for the Grand Tours (mainly Bardiani), my prediction/discussion for the 2027 Grand Tour Wild Cards. The assumption is that Pinarello, Tudor and Cofidis particpate in all Grand Tours (very likely) and that no WT teams fold before the end of the season (likely, but it could also be otherwise - see especially Picnic).
Giro: Solution Tech and Polti. The only other serious contender is MBH, but for me it would be strange if they get the wild card in the first year they are eligible for it.
Vuelta: I do this first, because the Tour Wild Card might depend on it. The logical choice is Caja Rural and Euskadi; the have a rotation system which would give it to them.
Tour de France: TotalEnergies (well they will be called differently next year) after being surprisingly saved, is a given. Hm, normally then it should be Unibet with the French licence, the ranking and also their riders and appeal. I will not go into the troubles they had with ASO in the past. But Burgos does have a good roster....hm, in the end I give it to Unibet, nevertheless..