autism101, Interesting Monotropism questionnaire, link below.
I hope the topic gets more research.
Monotropism is a theory of autism developed by autistic people, initially by Dinah Murray and Wenn Lawson.
“Monotropism Score: 231 / 235
Average: 4.91This score means that you are more Monotropic than about 99% of autistic people and about 100% of allistic people.”
Questionnaire: https://dlcincluded.github.io/MQ/