For me, my support person has known me for ten years. He helps me with a lot of executive tasks and managing social situations. I don't want to compare him to an animal but he's very similar to a service animal in that he's able to determine whether I'm doing Really Fucking Badly when other people can't, or can provide help when I'm struggling with regulation, memory issues, or similar problems.

He's also very good for me in conversations because he is NOT autistic and this is helpful for when I'm going over a conversation with him later and he helps me a) remember the conversation accurately b) helps me by pointing out what people meant, their body language, or similar things.

He also makes sure that my bags are properly packed for work trips, and when I am staying at hotels and occupied with work, he handles checkout and packing up the hotel room to make sure nothing is left behind. He's also just really good in general usually about keeping tabs on my schedule as well. He takes extremely good notes.

also he can drive lol