How to STOP sync & remove LrC from creative cloud sync ecosystem

I'm a hobby photographer. I use the Lr Mobile App to edit photos I take on my phone for IG, and sometimes for finer tuning I pull them up on my iPad or MacBook via LrCC. I like that it's simple and clean, and I have enough cloud storage for these smaller sets of photos.

However if I do a larger photoshoot or event with hundreds of shots, I use LrC and local/external storage, not the cloud. But I don't like to have my mobile images in there, it's off-topic clutter. I'm 90% sure based on searching this sub and the adobe help forums if I go into LrC settings and "Delete All Synced Data" it will clear the IG edits from CC and Mobile as well, which I do not want. I can dig into the Mobile Downloads.lrdata file and delete the local photos that way I believe, but I assume they'd just resync anytime I use CC/Mobile.

Is there a way to keep Lr Mobile and Lr CC synced and talking to each other over the cloud, but keep Lr Classic in its own local offline bubble?

Specs:
iPhone 12 Pro - iOS 16 (current)

• Lr Mobile v 8.5.1 (current)

MacBook Pro (Retina 15-inch, Mid 2015) - OS 12.6 Monterey (out of date, updates not supported)

• Lr CC 6.5 (current)
• Lr C 12.4 (out of date, afraid to strain old computer with updates)