>>50196419Pretty sure all of those digimon are in Cyber Sleuth if that helps. I know Next Order has Devimon and Myotismon (including the rookie demidevimon). So there's where you can start.
>Is SkullGreymon viable or does it not listen to you or is other type of bad ending or non viable?Just because a digimon is a "bad" digimon doesn't mean it won't listen to you. In DW1 and next order whether a digimon listens to you or not is dependent on it discipline gauge. This stat is affected by how you interact with you're digimon. Did you scold you're digimon when he refuses to eat the food you give him? Then the discipline gauge goes up. Different evos can also depend on a Digimons happiness or discipline.