totally agree with you! its a great way to search for mixes that will probably be more enjoyableI think you are right about that. Tidal usually use the form "immersive mix engineer" if they are mentioned in the credits. No entries for this in the FM credits sadly. I wish both Tidal and Apple could add them to the credits. It gives you another search option to find mixes you like.
tbh i've become rather fanatical over the years about finding out who engineers a Surround music mix because i have firm favourite Engineers (and some i tend to avoid! )