I haven't figured it out in detail yet, but I can definitely get visually overstimulated as well.
What regularly overstimulates me are packed stores. I don't necessarily mean crowded stores, but stores with lots and lots and lots of things. Racks of shelves with stuff on them. An example are hardware stores (if you call them that - I mean large stores that sell everything you'd need to build, renovate, decorate etc. your home). Another example, for some reason, is IKEA.
It's even worse if I am there to look for something. All the things just swirl in front of my eyes and make me tired and nauseated. I often need to ask someone for help because I simply wouldn't find the thing, or I'd get too overstimulated before finding it so I'd have to leave.
The other day, we were in a mall and it had Christmas decorations put up, including fairy lights, and they had a photo booth in the middle which flashed light regularly when people had their picture taken. The combined lights contributed to my general overstimulation.
When I'm purely overstimulated by sounds, I get really tense, anxious, irritable.
When it's mainly lights and visual clutter (as described above), I get really really tired suddenly, and brain-foggy, and can't think straight anymore.
Often it's a combination of both, though. But sometimes it's really separated.
Edit: Interestingly, my partner describes the following: For him, it's uncomfortable to take one sense away when he's overstimulated. Putting on headphones then feels uncomfortable to him because he gets even more overstimulated by the lights. Having all kinds of overstimulating senses at once somehow is more manageable for him and he can tune them out better than if one is removed because then the others get amplified.
To me, it's helpful to tune out noise in an overstimulating environment, even if there's light, smell etc. left.