As of 8/14/2020, I have three users on my proposal and they seem suspicious, just joined today and whatnot. Is there some way I can report them in hopes of my proposal not being closed for suspicious activity?
Proposal: Programming Languages
I don't think you need to worry. One user obviously signed up twice (perhaps they thought the first sign up didn't work somehow) and it's quite normal to have a few new users following a proposal, as can be seen in the most recent beta. This recently closed proposal had an abnormal number of new users following it and was (perhaps partly because of that) closed for suspicious activity.
In your case, I'd rather worry about the lack of questions (and followers) and/or the scope; isn't there significant overlap with Software Engineering, and are the remaining questions (e.g. this one) really a good fit for the Stack Exchange format?