I was running xposed without issue. I decided to upgrade to edxposed to get safetynet pass working.
I uninstalled xposed, rebooted, and checked that safetynet passed.
Installed riru core, edxposed (sandyhook), and the sandyhook's link's edxposed manager. Rebooted. Opened edxposed manager and enabled all modules. Rebooted again. Saw that my gravitybox UI settings changed upon reboot, so I'm assuming all is good.
Checked safetynet, both fails.
I restarted my phone a few times after enabling black listing and it works now.