I think this blog post https://www.thebalancecareers.com/how-to-succeed-at-asking-for-a-pay-raise-2071868 does a nice job walking through key considerations and things to do when generally asking for a raise, including specifically in the “Research” section highlighting some of the classic sources of data to use for salary comparisons and other elements of total compensation. The article does also give some tips around having the conversation and on those points, I just wanted to add that I definitely think the ask should happen in a meeting, not over email, and I don’t think it’s usually necessary to ask for a specific meeting to discuss a raise (which makes it seem very formal) when you could just add it as a topic in your next 1:1.
For metrics specifically to justify your raise, I would say use anything that shows you’re outperforming targets or even your peers or other areas of the business (although you of course don’t want to be putting others down). This could be beating the goals set for a major launch, delivering well above metrics like pipeline and bookings for your areas, getting very high satisfaction scores on your presentations, etc.