I have to agree that these were preexisting but almost invisible because of the sanding. The top pic looks like "old finish" was left in place. Considering how thin your boards are and how old they are, this is not unexpected. And to be clear, old floors can have 80 years worth of contamination (ie. wax, shoe polish, Pledge, Murphy's Oil soap, soap, hairspray, hair dye, etc) on them. These products can, and will, get past the original finish and contaminate the wood. Just like old urine stains pushing all the way through a board (the dark gray stain is most like an old urine stain...cause that's what they look like after many years), these contaminants can go several millimeters into the wood. Especially things like cooking oil, Murphy's Oil soap (anything oil based really) or even melted wax from a candle. After sanding, you wouldn't have 'seen' these things. But a quick swish of a slightly damp mop (make it wet to give some depth of colour) and all of these things would have been evident within moments of the water touching the wood. And that's why you can see them now. The clear coat is like water hitting the wood. It gives the colours depth...and definition. But unlike water, the finish is permanent. At this point, I would keep going with your plan = 2 more coats of Loba 2K Invisible. And You will want to hurry. To get a good 'stick' the next coat should be put down within 24 hours of the previous...or else the flooring guy has to abrade the floor again to get a mechanical grip rather than a chemical stick. Keep going. Know that you are getting 20 years more out of these floors that probably should have given up the ghost 20 years ago. That means you are extending the life by 40 years. For an old hardwood floor, that's impressive.

tried to grab some in different lighting and with fiff wall paint. i swear its even less orange in real life- or even in my camera reel before it posts here

I prefer a mid tone brown (cool in tone = same effect as gray) like Early American or Walnut. The walnut has a green base which means it will kill the red in the red oak. Going gray is a tricky business. We've seen gray (imagine a watery paint sloshed all over the floor) make pet stains (any liquid stains actually) look WORSE. And that's the last thing you want to see.

Trying to make my new red oak floors look like the first wood color but everything looks pink or clay colored. Any suggestions to get it to the top picture?