What do you call the people in your CRM who aren't leads yet?

I told Casey Hawkins her newsletter this week "picked out a good opportunity to start," because "this space before lead is often just not well defined." The most obvious label, subscriber, "doesn't make any sense in most cases," but we still need these people in the CRM. What are they called?

My take: "the key is not calling them lead if they don't fit in the definition of lead." That "can often be a way to get the definition on paper first."

If you're stuck on the stage before lead, start with the definition, then pick the name.