@CaseySJ Hehehe...
I plugged in an old Lacie TB1 drive using an Apple TB2 -> adapter.
It worked from cold boot.
I tried 3 different Thunderbolt 3 cables from cold boot to the Thunderbolt 3 dock. Nothing.
Now I'm going to try this with the Macbook separate from the Hackintosh. I think it's the dock.
It might need a firmware update, or a swift chuck out of the window. But I THINK ... and I hope I'm not being presumptious ... I THINK my TB3 stuff is SOLVED.
Unless, getting TB1 to kick in from cold boot is much easier than TB3.... but this seems unlikely.
Here was my clue...... when I unplugged the dock, I was trying Target Disk mode with my Macbook plugged into the Titan Ridge at the time.
When I booted the Hackintosh, the battery chimed on the Macbook which tells me 'wait a minute, the card IS sending power on boot ....'
Side-side-note, I can't get Target Disk Mode to work on my Macbook (holding T at boot).... inputting the password when it prompted on the Hackintosh did nothing for me. It works over Local Node networking, but not actual Target Disk mode. Gotta investigate that next....
For now, I'm going to attempt to shut down this Macbook Pro. Close the lid, plug in the dock, open the lid- then see what happens lol