I am aware that there are user profiles for both games, but they are not officially supported. Everything you see in the profile cloud that doesn’t end with [vorpX] is a user profile. Can’t say much to that unfortunately. However, I was made aware recently of some older OpenGL user profiles not working right anymore. Since both games use OpenGL they are affected probably. Will be looked into.
As far as Half-Life is concerned I’d highly suggest Black Mesa: Source on Steam instead, which works great with vorpX. Just in case you never heard of it before: Black Mesa: Source is a remake of the original Half-Life with more modern graphics. Caveat: It has to be the Steam version, there also is a fairly old free version, but that is not supported by vorpX.
Apart from that: take a peek at the Good Full VR Games for Beginners list. Those are known to work great with minimal fuzz.
BTW: You don’t need to download official profiles usually, vorpX already comes with all official profiles that are available.