I'm that case go for an overclocked 4070, Asus sells those, otherwise you're gonna get ripped off with anything beyond that. I have the 4070 OC edition and I never had issues with any game and cyberpunk isn't an exception either.
4070 vs 4070ti depends, in terms of value. It is a 15 to 20% increase and when I bought my 4070ti OC recently, it was 20% more than the non-ti equivalent, which is why I made the call. That being said, I bought an Asus ProArt for esthetic reasons and their pricing on that series is a bit wonky.
If you can get a ti for 20% or less over non-ti, I would say to get it. IMO if price and % uptick are relatively close, it makes sense.
In CP2077, I play with RT Ultra at 4k with all the shenanigans (FG, DLSS) and it makes it run at +/-90fps, which is my personal sweetspot. It is hard to compare directly with a non-ti because of FG, but I enjoy the potential uptick from 75 to 90.
If they had made the TI with 16gb, that would have been an absolute no-brainer, though, if prices were what they are now.
Edit: regardless of what you buy now, it comes with a hefty side of "I feel like I am being f*cked".