Google also spawned a second one for me from my original gmail address, but I still use my original pre-google+ youtube account. After signing in to that google account on any given device, I have the option to switch between the two youtube accounts associated with the email.

That must be nice. Was your YT account also from before the acquisition?

My original account still exists and my face is in the videos as well but but I have no way to log in and support couldn’t or wouldn’t help me.

The original YT account associated with the email was created in mid-2010, so not pre-acquisition.

It's good that you have access to both; out of curiosity, is there any differentiation in the way it list them in the menu where you pick which one to use, or is the order consistent? I can imagine being mildly annoyed if I had to guess every time I logged into a new device which one was the one I wanted, although obviously that's still better than just not having a choice.

The one created for google+ is usually listed first. After signing into my google account on a new device, the google+ one is also the one that I'm usually automatically signed into.