About 2 years ago I wondered the same, so I collected a bunch of data (of ‘who worked on which game’) and used D3.js to make a graph thingy:
Downside: It’s up to Shadowlands, not Dragonflight
Live version here, but it’s SUPER janky - changing selections will generate a new graph lower down the page.
Raw JSON data here - I had to install Retail WoW (F2P is good enough), dig into the game files to find the .html files that contained the credits and then convert that whole pile of doodoo into JSON.