The first 3 are apart of windows and do not mess with them. The last to is self explanatory.
The first 3 are exactly the same as on my system.....nothing to worry about. Skype could be 1 of 2 things. The first is the new skype app that's apart of windows 10. 2, you downloaded the desktop (legacy) version. That's the one I use....as I can't stand the app version.
As I said....it's all perfectly normal and you don't need to mess with them.