Inviting coworkers etiquette

I’m trying to decide on if I should invite some of my coworkers/managers. I work on a small team and of the people I want to invite I’m looking at literally all of the managers except one. So now I’m feeling bad because she’s the only manager I’m not inviting. But I really really disliked her though I’m pretty sure she has no idea because I’m always very nice to her and she had never seemed to change her behavior to me. I don’t want to cause problems at work but I don’t want to invite her on principal but then again I probably will barely have to interact with her and she’s the only person I feel compelled to invite that I don’t like, luckily we don’t have any bad eggs in either of our families. I’m also feeling weird because I’m inviting all the managers and only one person who isn’t a manager and I don’t want to look like a brown noser but we have a high staff turn over in one department and I don’t really know any of them but the managers have been there there the whole time and so has the one non manager I’m inviting but I just feel bad leaving people out and I’m sure it’s my anxiety making me feel awkward I just really need reassurance.