It's not a simple question, because I don't track every "BitShares employee". I'm not even sure exactly what definition you intend, but assuming you mean anyone who received a salary from Invictus (DanL's company) or from the BitShares proposal system, I think there are two: me (from both sources) and abit (from proposal system). A couple other witnesses were community members who posted in BitShares forums. And a couple have been or still are witnesses on several graphene chains (I don't track that too closely since I don't keep up with those chains too much).

Also, I don't think you understand the term "mansplaining".