I think there are other visual phobias that maybe are even lesser known. I have some kind of phobia-like thing with industrial/mechanical things that are dirty-looking or poorly-lit. It's hard to explain. Also things like dam spillways/etc.
Like, opening up an indoor furnace to repair or check for issues. The dust, the rust, the coils, etc all give me a weird feeling. It's not as heavy or pronounced as my trypophobia. I can overcome it much easier (with strong/bright lighting, etc) but I still notice its presence.
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Also, I'm not sure if "phobia" is the best term or not either. For me, in some cases there can be some kind of fear or disgust involved. But mostly for me it's not any kind of mental analysis ("ew, gross", etc) it's just a reaction. Looking at the pictures just immediately induces an unsettling feeling, crawling/itching head and skin, etc.