I'm working on something close. You can create a team by combining any number of contributors, from any repository and start tracking their activity.

https://public-001.gitsense.com/insights/github/contributors

Edit: Not sure if my server can survive, but you play with the server on your own machine if you have docker installed.

$> docker run --rm -d -p 3347:3347 gitsense/gitsense-server

You can add a repo by connecting to the docker container

$> docker exec -ti <container id> bash

$ your docker container> add-repo github github super-linter

And track indexing by going to the admin tool

http://<your docker host machine>:3347/admin (username: admin, password: admin)

To set a token, execute in your container

set-token github <your token>