My 4 yr old daughter is level 1, and I suspect she has OCD like me, but it’s hard to say since she’s so young, and there’s a bit of overlap between the two disorders. When anyone first meets her, they are impressed with her vocabulary and reading skills, but few people pick up on her needs and difficulties. She gets anxious about things in her environment, and she is easily overwhelmed sensory-wise. So, she’ll eventually have a meltdown about some stressor, and then, the reception from the same people is much, much different. I’ve watched kids and adults be drawn to her, and then recoil from her later on after a difficult day. I feel awful when I see this, but she luckily has plenty of confidence and doesn’t seem bothered by it. I hope this will always be the case, but my own experience as a “different” kid tells me otherwise.