Retegui is the rare exception because he had no chance to be called up for Argentina.
While Soule tho barely anybody, is earmarked for Argentina NT, was called up and training with them while still in our youth team.
Not sure it's fair to say he had no chance, he was scoring goals for Tigre before earning a move to Genoa and is doing fairly well now, who knows if he was still uncapped he might be in the Argentina NT now, I feel he offers something different to the likes of Lautaro and Alvarez..
As for Soule he's probably looking at the likes of Di Maria, Messi who will retire in the next couple of years and even Dybala in terms of his injury problems and feels he has a better chance of being part of taking one of their roles.