tromey is a user on octodon.social. You can follow them or interact with them if you have an account anywhere in the fediverse.
If you don't, you can sign up here.
In lldb I think the string types you can use are std::string, ConstString, StringRef, SmallString, CachedHashString, CachedHashStringRef, and Twine. Though I think I may be missing one.