Heh, I can also see myself in most of the categories, so instead of choosing two or three which seems nigh-impossible, I'll try going through them point by point.
The species hunter
I guess this one fits me a lot of the time. Of course, zoo visits are not only about seeing new species, as I also have favorite species that I've seen many times before, but like to see again in new surroundings - but if I'm choosing between two zoos that both look good, I'll often choose the one with the most rare species.
The goliath
Well... Yes. This is my guilty pleasure and may be the category that fits me best. I love huge zoos even though us zoo nerds (and people in general) often seem to be expected to follow the good ol' "quality over quantity" adage - small zoos can definitely be cosy and pleasant, but I only get that "rush" of zoo visiting when I go to a zoo so big that I feel sure I'll have to spend the entire day there. Maybe it's some sort of "the grass is greener" effect because I live in a country that only has zoos with fairly small collections and in most cases small areas.
The historian
Seeing old zoos and soaking in their history is nice, but it's not a huge passion of mine. Despite many people complaining about all the rare species that the zoos of the present have lost, I'd rather visit a present day zoo with ABC's in good exhibits than go back in time to see rare species in cramped cages.
The connoisseur
Yes and no. I find that every zoo has its own unique atmosphere no matter what, so I rarely seek out zoos who are known for having unique atmospheres (unless they also appeal to my species hunter or goliath nature). But sometimes, I unexpectedly visit a zoo that happens to make me think "wow, that was special - so awesome" when I leave. I guess I have a connoisseur sleeping inside me, but he doesn't always wake up.
The specialist
One group of animals that I absolutely love - even though they tend to be overlooked by average visitors and even many Zoochatters - is waterfowl. If a zoo doesn't have at least a few duck, goose and swan species, its collection doesn't feel complete to me even if most other animal groups are well-represented. So yeah, I'd absolutely prioritize a zoo with a big waterfowl collection over one with no waterfowl if they both looked good. Of course, I have also many other animals I love, so I can easily enjoy a zoo even if it doesn't have waterfowl. Again, it may be a "the grass is greener" effect - almost all Danish zoos have minimal or non-existent waterfowl collections.
The erlebnis architect
I have to admit I'm pretty tacky here because I actually enjoy this kind of theming. I'm an unusual Zoochatter in that I liked Hannover Zoo a lot. Of course, everything can be overdone, but overdoing "erlebnises" is often through adding an unnecessary amount of playgrounds, often tearing down animal exhibits in the process.
The idealist
Of course, who isn't? I think everyone who is not 100 % against zoos has a bit of an idealist in them. That being said, part of my idealism comes from how I think zoos are doing a pretty good job already, so I'm not desperate for them to get better.
The photographer
I have taken lots of photos in zoos recent years, but my record is "only" around 700 pictures during a day, so I'm probably a nobody in that area compared to many Zoochatters. I've got an old and not too great camera, and my photographing skills aren't great, so I suck at taking "portrait photos" and close-ups of animals. I mostly take photos of the exhibits and surroundings to cherish the memories. I wouldn't choose a zoo just because it had great opportunities.
The home zoo hooligan
Not really. I don't really consider myself to have a "home zoo" as it takes some 50 minutes to drive to the nearest zoo. There are no zoos that I visit more than once a year because I like to visit zoos for the novelty of it - if it's not a new zoo, or if the old zoos doesn't have any new exhibits, it's not as interesting to me. I'd rather visit one of these zoos once every few years and then spend the entire day there instead of visiting it for a few hours every week. Maybe I would be different if my home zoo was something like Berlin Zoo and Bronx Zoo - a huge zoo that you can barely see in one day and constantly has small changes in exhibits and collection.
The nerd
Somewhat. I cannot go on vacation without checking for at least two zoos to visit. That being said, I have other interests when travelling, and walking around cities, visiting museums, hiking and so on often only leave room for two zoo visits. I wouldn't want to go on a week-or-longer trip to only see zoos - I'd get a zoo overload, and it would not be funny anymore. Zoos are better in moderation. That being said, I'm always excited in a perfectly childish way every time I'm going to visit a new zoo that looks interesting.