The UI concept of "pinning" favourite/active entries by the user is both old and commonly used. I was trying to do the same in Fusion 360, to lift the design I work most on to the top. Currently, the software does not have this.
It does allow "sort by last update", but that doesn't serve exactly the same need.
Please consider. Mock below.
Mock. Pushing a pin icon would keep the design topmost.
Workaround: can add numbers (e.g. "1. Track") and press "refresh" to bring the wanted design(s) to the top.