Hello StageNamePending,
Thanks for that additional information.
It sounds like the only option at this point is to unplug the iPhone, and then hold the power button on the computer down until it restarts.
Please be aware, this may require you to restore your backup on your iPhone. As this has been occurring for some time now, this may be the only option at this point though: Log out, sleep, wake, restart, or shut down your Mac - Apple Support
"Important: You can force a shutdown if necessary—for example, if your Mac becomes unresponsive—by pressing and holding the power button until your Mac shuts down. You may lose unsaved changes in open documents."
Remember to check safe mode once you can power your Mac down: Start up your Mac in safe mode - Apple Support
If you need to restore your backup to your iPhone, check this help article: Restore your iPhone, iPad, or iPod touch from a backup - Apple Support
Thanks.