My thinking is similar - that there are an overwhelming majority that are state actors. But, my guess is that in the non-state actor accounts it wouldn't just be some accounts that got "swept up" as a side effect. I would be there would likely be some very noticeable targeting of certain types of accounts (ie, those that have social values that are more left leaning, or those that are trying to promote verifiable information that flies in the face of conservative narratives).