The .team_info file format was presumably created by Tekken57 for his X-Packer tool. It contains the section from memory/saves where the basic information of a tag team or stable is stored. It was adopted by Caveman's Data Editor followed by TheVisitorX' Custom Character Tools which all support this format.
File Breakdown and Analysis
This file type is different for various games. This section breaks down this file type per game.
A Breakdown of this File Type in WWE 2K19.
A Breakdown of this File Type in WWE 2K18.
A Breakdown of this File Type in WWE 2K17.