Most of them are owned by one company. The only independent ones are Mullvad, Proton, and IVPN. For the most part, you want to Tor and never sign into anything if you are being ultra private about your browsing.
I hate that these commercial providers are the first thing people think of when they hear "VPN" these days, rather than the actual main use case for a VPN (connecting to a remote network, like a work network, from another location).