SPAD.next also supports the MCP2 on MSFS in the latest alpha builds. Very powerful tool to assign multiple actions and scripts to any button. SPAD has a very active Discord server with much discussion and help getting various devices to work with the 737. I have not bought the NG yet as I am doing a worldwide farewell tour on P3D, but may this weekend to start setting up the MCP2.
I also purchased AAO, but find SPAD.next has a much easier GUI based interface to program devices.