Fully agree. It's all about old school for me and all the guys you listed are my guys. I tried the Darkglass VMT based on reviews touting it as warm tube style break up in search of B15 esque holy grail of break up/warmth/slightly blown speaker sound and it found it to be quite terrible. It was brittle and artificial sounding. Well built but not at all what I was hoping for.
Tim Lefev recommended I picked up the Amptweaker Bass Tight Fuzz and man if that thing isn't bang on for what I was after. Tons of usable settings. Does the light and warm break up AMAZINGLY and the Dry Low knob and Tight controls are fantastic. Thick fat tone and puts a little hair on it or can go into heavy fuzz territory.
Based on the list of bassists you listed and similar tonal goals I'll be very curious to see how you get along with the Oracle. If you're liking it so far I'm guessing it's getting you into that Muscle Shoals territory!? I'm pretty sold on it being the right tube pre for me and hoping to add one this year at some point.
The Oracle is pretty old school. The tonestack has been around for a long time.
I'm digging it so far.