It sounds stupid but here is the reason: there is a cut-scene with starter right after talking with Kukui before you challenge the elite four. That scene changes depending on our starter (a similar case can be found at the start of the game where you show your starter to your mother which can also be changed) , i want to see all the evolution lines in that scene. Currently, i have Litten and i can use pkhex to see Torracat and incineroar scene but not for 2 other starters. So i want 2 save files contain each of them and around this time if possible (through doing trial on island 3 or 4 is good enough, i can do the rest myself).
If anyone have alternative way to view all the scenes but faster, feel free to discuss it.