> There are even more when it comes to actual search warrants.

Probably not much, since there is very little that would be within third-party custody that they would need a search warrant rather than one of various forms of subpoena (including administrative ones like NSLs) for, and the latter would already be counted in the “without a search warrant” count.

NSLs and FISA orders are a small fraction of the data that US cloud providers turn over. The majority is in response to actual search warrants.