Isn't Mozilla VPN just rebranded Mullvad? The only difference is that you can get Mullvad anywhere and pay anonymously without any accounts.
It uses WireGuard, an open VPN protocol, so it's not necessarily forever anchored to Mullvad.
It's Mozilla white labeling an anonymous VPN service (ie, we don't know who runs it).
I thought it's owner regularly comments / joins in on hacker news... I didn't feel like I don't know who's running it?
Edit : quick search turns two very relevant posts:
"Who owns Mullvad? The Mullvad VPN service is operated by Mullvad VPN AB which is a subsidiary of Amagicom AB. Both companies are 100% owned by founders Fredrik Strömberg and Daniel Berntsson."
Location, Company name, individual names of founders/owners. What other "identifying information" would satisfy?
I found their FAQ, blog and guides tremendously helpful, transparent and upfront. There's a wealth of info with just a couple of clicks.