(1) You never commented on that article...
https://support.office.com/en-us/article/onedrive-is-stuck-on-processing-changes-b386b813-9b66-4e47-8c4c-2b45533edccd
OneDrive is stuck on “Processing changes"
Does anything in there seem applicable? Did you try the simple stuff in the article - like pause & restart the syncing?
(2) For a resync - how about...?...
(a) Right-click one of the "circular double-arrow" folders, & select "Free up space"...

That should delete it from the computer (or is it from just that user profile?) & make it online only. The checkmark will drop off of "Always keep...", & the Status icon should become a "check in a green circle" - no longer double-arrows.
(b) Then, right-click it & select "Always keep...", which reads it back into the (computer or profile?)
That should constitute a resync comparable to moving the folder out of & back in to OneDrive..
(3) I'm not sure - as you've got two user profiles - do they each have a separate set of those folders in their offline OneDrive folder? But both of them link to the same online OneDrive site?
(a) If they link to the same site, then deleting a file in one profile will soon cause it to delete in the other one. But will "Free up space" constitute a delete? I don't know, I'd hope
not.
(b) Right-click one of those double-circle folders in each profile, & select
Properties. Do they have exactly the same number of bytes?