I've heard that OSCP is a lot more CVE based than hackthebox. It apparently also has a lot more rabbit holes compared to hackthebox. I haven't checked out thecybermentor yet, but a friend of mine has and he seemed to like it as well.
It is more about identifying CVEs and exploits than HTB is, but there is still a good amount of finding misconfigurations, like HTB has. OSCP helps you build a methodology and a mindset for pentesting, and finding CVEs with existing exploits makes that a little easier than HTB, where you are not under time pressure. HTB would be my goto to prep for OSCP, I wish I'd found it before.
I've heard that OSCP is a lot more CVE based than hackthebox. It apparently also has a lot more rabbit holes compared to hackthebox. I haven't checked out thecybermentor yet, but a friend of mine has and he seemed to like it as well.