Having looked into this topic for a few years now I can tell you about a few more types of people to consider.
For me, it can probably be boiled down to three different groupings. Those for, those against and those on the fence.
There is another group that might be considered. Since beliefs can often turn into knowing or knowledge. Those that verify and accept or realize the validity of said information... however it might've been introduced to them. Also, regardless of whether or not they did or did not base this belief or knowing on real life experiences or various levels of using the scientific method or other accepted ways to come to or approach conclusions. For example a legal approach might take into consideration a preponderance of evidence in absence of one definitive proof. It's hard considering semantics as one person's knowing is another's belief and vise versa. Some of it is cultural and where people and/or more specifically how people are raised.
Some of these may be redundant but here are some other types to consider as well...
-People that consider the opposing view or perspective and do a deep investigation into it. Concluding for, against or perpetually sitting on the fence.
-People that think it's crazy but find it more and more impossible to debunk the more they look into it. Maybe this type is the ones that volunteer (side note: I'm kind of wondering who they are volunteering for?) to disprove it? Although there are the same three outcomes from trying to disprove it.
-People that have known nothing else. In this case, consider many aboriginal and indigenous peoples or previous civilizations. Maybe these people could also be called biased or previously biased people?
-People that might be bored and curious. Not caring which side they land on in the end.
-People that might be peer pressured.
-People that have investigated and come to accept the supposed theory with real life experiences and tests or experiments.
-People that are gullible no matter the topic or subject.
-People that blindly jump into it just from debunking an opposing topic, theory or set of facts.
-People that are paid to infiltrate a group for various reasons. Can be on any side of the topic.
-People that use it as entertainment. Those that like to stir the pot (so to speak).
-People that just wanna argue or debate.
I could go on. Not trying to stir the pot again. I think it's sad but it seems it's a sore subject for many including major tech. companies that operate search engines and social platforms. It's become hard to find any legit outcomes from a search on the subject these days....mainly for one side of the topic. So, if anyone is interested in more info. (both for or against...or on fence) on this topic....send me a purple moose egg.
I would like to include a presentation that I think is perfect for this thread. It's a Ph.D. anthropologist who did an extensive study and subsequent presentation on the movement and people of this topic.