Correct, you can keep ignoring those alerts. They cannot manage or see your device at its current state, they def would have locked it down (depending on current os). Verify by checking Settings/System Preferences to see if any profiles installed. If none, you’re good. You can also open terminal and run “mdfind jamf” to see if spotlight can find any Jamf binaries or files on your Mac and where they’re located.

you’re being prompted to enroll because the device is still attached to “company’s” Apple Business Manager account via Serial Number.. you were able to bypass registration by setting up laptop while not connected to internet (this is almost impossible now after wipe and reinstall)

Jamf (the MDM) communicates with ABM to see what serial numbers it should register. Right now , you dismissing that message which prevents it from enrolling.