Gengar can soul steal everyone in pokemon if you want, no one has the same stuff as what allowed the other pokemons from resisting it, unlike Vegito and Trunks.
No, the fear gas depend on the version and that Superman doesn't have the same stuff that allowed other character to resist it, that's why he doesn't resist it.
Litteraly none of the stuff you mentionned is the same situation as what we were talking about so it's still resisted, c'est la vie, Bill is still losing.
I could go on on why it's wrong and why we don't apply that way, it's not because you can go on something that it's true, especialy when your motivation is petty and biased as hell and thus not based on actual reasoning.
.........People talk about that kind of stuff all the time for all kind of verse, i don't know what you're smoking, you only see it about Zeno because you keep making those kinds of thread everytime a match with a DB character doesn't go your way and Zeno is the most obvious exemple of why it doesn't work.
No, we established jackshit unless we accept the daizenshuu suddenly and i can tell a lot of shit is going to change if we do, we explicitly don't accept them AGAIN and once again, the daizenshuu just state his resistance as a characteristic because no one else was that strong back then.
Vegito who resisted that is explicitly inferior to BOG Goku, try again, they are only greater than their part at the time, the components of the fusion can then independently grow stronger than the fusion was back then and even if we accept that, it still leave DBX Trunks and DBH Trunks doing the same for the same reason while inferior to Goku who clearly has indirect previous feats of resisting transmutation through being litteraly half of Vegeto.
Soul Punisher isn't canon so no but the spirit sword ? totaly, there is litteraly no reason they shouldn't.
No idea, we don't know shit about their current power or they fight but the kamiazee ghost and galactic donuts are clearly just way to use ki, they don't need anything except fiiting their user's fighting style, Gotenks just has a different personality and is more of a show off than either of the kids.