The home page of the data explorer lists all the sites.
Let's say I want to navigate to a particular site. So I search on the page, let's say, “unix”. No match. Weird, I was pretty sure we had a unix site. And what about that “server” site? Only has a meta?¹ “Home improvement”? “Overflow” as in Math or Stack? “Electrical” or “engineering”? (Exercise: without visiting another web page, find Reverse Engineering in that list.)
The name of the site is only provided as a logo, with the site's description as a subtitle. Please include it in searchable form.
¹ Two metas, actually — the description for MSO is “Q&A about Stack Overflow, Server Fault and Super User”, which is in serious need of updating.