Suspicious processes in top and nettop

There’s nothing wrong here.

In no particular order… MacOS routinely runs services you don’t use. Posting unsolicited images can disclose sensitive information and can potentially end badly. First-few-hops VPN clients are protections against problems that haven’t existed for a decade. There’s rubbish on the regular internet, we don’t need Tor for that. It’s “Tor” and not “TOR”.

More generally… If you want to learn about macOS internals and forensics, acquire the New OS X Book (three volumes), and learn about the structures and organization of macOS.

Malware that can survive a reload is very rare, and—if you’re a potential target of that—requires specialized help with security tailored ro your situation.

In addition to the great advice from @MrHoffman, here is another article written by a respected forum contributor which can help keep both you and your devices safe.

Effective defenses against malware and other threats - Apple Community

FYI, you will drive yourself crazy looking too closely at these things since every OS (macOS, Windows, Linux, BSD, etc,.) will have dozens of processes with the same name running at the same time and is perfectly normal. You will only discover a problem if the malware actually uses some oddly named process which is not normally used by the OS or any standard apps. Even then, a legitimate app & process may have odd names. Also, stay away from the macOS system logs for the very same reason.

Just use your Mac normally and don't worry about anything unless you start to have problems. As long as you practice safe computing habits as outlined in the article I linked, you are not likely to ever have a malware related problem.

If you are a high profile target, then you will need to be extra cautious with your safe computing habits and you may need to implement other security procedures, but if that is the case, then you should be consulting with a firm specializing in personal security measures.

The average user who practices safe computing habits should very seldom encounter any malware related issues...any issues should be minor.

Social engineering (aka phishing) is what the average user needs to worry about since people are the weakest link in any security endeavor.

Okay, so you’re going to be spending time researching every process in macOS. To do that, read the internals book, and search the open source archives, and search the net.

And also realize that the whole process name approach is somewhat less than completely illuminating, as malware can borrow legitimate process names.

There are legitimate processes using the name mobileactivationd, usually part of: https://libimobiledevice.org/

PerfPowerService is also usually part of macOS.

Most attacks are against us, and not our devices. We’re the weakest part of security, on average. Phishing and other scams, re-used passwords, forgetting to update, compromised passwords via shoulder surfing, etc.

Here’s an intro to safety and security:

Personal Safety User Guide - Apple Support

The widely-publicized high-profile exploits are exceedingly rare, by all appearances

Probably best to explain your specific security risks to Apple, and ask them for forensics suggestions.