Token for instruments used in a flow?

I have a project with 10 flows (songs) and 5 reed players holding multiple instruments.

Would there be a way (a token?) to automatically create a list of the instruments used in a flow for each of the reed players? So a list of all the instruments that the player is playing in that flow.

I would like to keep all of the songs in the same file, as it is easier (faster) to edit them that way, but this would be a typical thing for the parts to have.

There’s not presently a token for that, sorry. It’s been requested.