Greenhill Analysts

Hey guys I've search WSO for this but seems to be getting conflicting answers

are GHL analysts placed into specific groups or is it a generalist program? I've seen alot of posts that say its a generalist program but then others that, when comparing GHL and other firms, say depends on what group you get in at GHL. I"ve also had friends at banks tell me GHL is by group?

Could someone just clarify this for me. and if they have groups, what are the strongest ones vs. weaker ones?

Thanks in advance.