Whats the namr of the crime for when someone posts something of you without your permission?

It might qualify as invasion of privacy.

Unless the posting of "something of you" includes child pornography, or other things covered under a specific criminal statute in some state, it's probably not a crime, but a 'civil' wrong for which you could (in theory) sue in court to get an injunction or possibly "damages".

Social media, but it isn't a crime.

There is no such crime. For the most part anyone can post anything about you they wish. The only exception would be libel where you can prove damages.

The namr is public disclosure of private facts. It's a tort which ain't a crime.

Copyright, Liabel have been mentioned, but if you have an established presence (entertainer, business owner, other personalities) that suffers a blow to finances or reputation, you can slap them with slander as well if it is untrue.

copyright infringement

It depends on what they have posted. Liabel, copyright infringement, etc.

I don't think that is a crime. In some circumstances it could be invasion of privacy, defamation, right to publicity, or copyright infringement. Most of those are civil and not criminal issues though. So you could sue someone, but it's not a crime.