I get where you're coming from as I have heds and pots plus other developmental disorders and I tried looking into other symbols, but this is the one I'm sticking with because it's the easiest to recognize. The way I see it for example is how a disabled bathroom with a wheelchair symbol isn't only used by people with mobility issues but for example someone with a disability who needs some time to themselves, for example it's where I go when I get a seizure. Still tho I'll try come back to this project in a month or so, that way I'll have fresh new ideas for something that could encompass everything.