There's a lot of overlap. There is an 80-question autism screener online that should help answer the question for you - I relate to all of the above but I'm very definitely not autistic (and very, very ADHD).

Pure autism markers include things like if the texture of food is more important to you than the taste; if disruptions to routines make you feel very anxious; or if you take things very, very literally.

I use a lot of metaphors and idioms, but my AuDHD relative says "what bridge?" if I say, "let's cross this bridge when we get to it."