It seems that you have removed categories that I added to the Thanos page for legitimate reasons. I added Evil from the Past because in Avengers: Endgame, Thanos came from 2014 to fight the Avengers and steal the past versions of the Infinity Stones, which, to me, seems like he would be an evil coming from the past, or I may just be unaware of what it really means. I added Thor Villains because the Sanctuary II, Thanos' warship, appeared at the end of Thor: Ragnarok, coming from a now-decimated Xandar (after stealing the Power Stone) to take the Space Stone from Thor, Loki, Hulk and the Asgardians. And I added Agents of SHIELD Villains because he makes an appearance in Agents of SHIELD. You most likely have your own reasons for removing the categories, but I would've liked to keep them on there.
Well, to start off, Thanos didn't make an appearance in Thor: Ragnarok despite his ship showing up in the film. Plus, he was only mentioned in Agents of SHIELD in Season 5. And the 2014 Thanos traveled to the future to fight the Avengers.
About the discussion we had yesterday. Why is Thanos listed as a villain in Thor: Ragnarok, Ant-Man and the Wasp, Agents of SHIELD (Season 5) if he's not categorized as a Thor Villain, Ant-Man Villain or Agents of SHIELD Villain? Like you said, Thanos doesn't make an appearance in Ragnarok and is mentioned in AoS, same with Guardians of the Galaxy Vol. 2. I'm probably wrong about this otherwise I'm just losing my mind.