I find there is definitely a ND "type" of person although it's not easy to say if it's ADHD or ASD or both. A lot of people have these traits:
A love for presenting visual objects, colours or textures that they like to the public. This could be brightly coloured hair, a bag with tons of curated badges and pins or a home decorated with collections of a specific brand or theme.
When you talk to them, they can passionately go off about a subject they love. If you like that thing too then it's brilliant conversation but it can be a bit weird and out of context if you don't know them well. With autism, the person misses cues to shift the conversation or they keep steering the topic back to their own personal interest.
Another subtle giveaway is not being able to close a conversation when you are socially expected to be departing. DH has this and leaving weddings or dinner parties is excruciating because he goes around saying goodbye but continues to talk for a solid 10-20mins or even longer with every person. It often takes us 1-2 hours for us to leave after the initial "Well we should be going now" gets spoken.
Contrary to popular belief, many high masking ASD/ADHDers are very good at making conversation but they struggle to know when & how to stop. They are masking so intensely that they don't see the other person is losing interest, their wife might need help with the kids or the time is way past midnight.
As a result, these are people who may accidentally overstay their welcome in social situations or ones who are chronically late if they have been someplace beforehand that required masking.
Another clue I noticed with DH is that alcohol loosens him up significantly and he also know that talking to intoxicated NT people is far easier than masking amongst sober ones. So many have problems controlling their drinking because it's linked to the feeling and relief of not having to mask. They cannot stop at 1-2 drinks even if they promised to beforehand.
In contrast to the "blue hair" stereotype, many autistic women tend to hyperfocus on their appearance because pretty privilege often buffers the experience of being ND. Makeup and skincare is a very common special interest. So women who seem to have every tiny bit of their physical appearance professionally enhanced are also more likely to be ND. Not talking just a few cosmetic treatments but literally everything including hair, lashes, nails, makeup, fillers, teeth, spray tan, plastic surgery etc.