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Probably the probe offset in config is wrong. Type M503. Find the output where it says M665 Zsomething. That is the Z height it's using for the printer. G28. Jog the hot end down until it snags the paper. Take the difference between that and the Z-value of M665 to find what the value should ...

Running a G30 outputs the correct Z height, and that's within 1-2mm of what is in my config. Doesn't explain me running a G0 Z220 and still crashing into glass.

Any thoughts on my issue? Gonna have to roll firmware back to edge because I'm completely stuck after this calibration.

I'm having a slightly different issue. I've successfully probed, and built out the depth map, but now whenever I send an absolute move (I.e. G0 Z100), my effector crashes into my print surface. Relative moves through Pronterface work fine, but I'm not sure what is going on. I can run a G28, G30, and ...