- Legal is generally part of G&A (General & Admin.) - Support is one category that I hadn't thought about, but perhaps they are contractors. - I can't imagine Uber having more than 50 or so design people, all in the 'apps' category.

What are the others in the 'tons' more category, not part of any of the categories I have mentioned? It may be a super mass market consumer service but part of the reason it's so highly valued is the efficiencies of scale it brings to these things.