WTS refers to Acts 15 to prove there is a governing body, but that phrase never occurs in the bible even the RNWT.
You are correct. The only reference to 'governing body' is a WT term inserted in the ** nwtsty Acts Study Notes—Chapter 15 ** It is a JW term, and interesting that in that reference it is not capitalized about those elders while when they refer to themselves they do capitalize the G and the B as in an assumed title.
Reminds me of what Jesus said in the first eleven verses of Matthew 23 about the Pharisees in his day.