I don’t think that @Ruperty was asking how to filter by affiliation to find characters who satisfy daily reward requirements; I think they genuinely don’t even know which daily rewards are active. Which is a complaint I’ve long had about the game too. The affiliation filter doesn’t help them if they still don’t even know why using Thor earned them something.
I’ve always begged the devs to add a tab under Quests just so you can keep track of what’s active today, what the requirements are, whether you’ve earned it yet, how many hours until each one resets, etc.
Currently you can get tokens for playing a “metal” themed character and another for playing a character with a zombie cover. I don’t think a search filter is in place for those currently, but you can get both in one swoop by using 3* Iron Man or Iron Fist.
Up until recently, you were also able to get a Hispanic heritage month token for playing Latinx characters, but I don’t think that’s still active.
But to answer your question specifically, there’s no in-game lost of currently active rewards characters, but that would be a great QoL feature.
To clarify, if you want to say Latino or Latina, I’m not judging you for it. I’m simply reflecting the language used by my Latino/Latina friends out of respect for them (and I’m not using terms like “alphabet gang” to dismiss anyone else’s opinions). But as EB pointed out, it’s not really relevant to this subject anyway.
I haven’t understood anything going on but now see that possibly we could use characterx for mutants? I mean, if we needed a reason to do that. Do Mutants speak Mutantish?