I used to think I had a fear of heights, but now I know I just have a problem with being disoriented and passive unalive thoughts, which isn't uncommon for those with AuDHD. For the record, I also have a problem with elevators, escalators, etc. because they are disorienting and I find it difficult to handle. I also get headache, nauseous, and almost pass out from blinking lights and many of the same things that set people with epilepsy off. I don't have seizures, so I'm pretty sure that's just the disorientation thing again. Oh, also I freak out if things are too close to my face and will flinch away long before they actually get to my face.
Anyhow, I don't know about calling everything a phobia as something isn't necessarily a phobia just because you're afraid of it. Generally, it has to heavily affect your life to the point of causing distress and avoidance-type behaviors. I tend to freak out every time I see a bug, but literally can't sleep and the reaction is much worse when it is a spider, especially one with any amount of decent size to it. I also have a bit of a fear of the dark where I will literally freak out and run into a lit room as an adult to escape the dark. The feeling is made worse when I'm anxious. I literally can't sleep with a closet door open because of a trauma response related to a pervert hiding in the closet when I was growing up. Still, I'm not sure if any of these actually are intense enough that they could be considered a phobia, even despite how intense my reaction can be to them.