Yep. The way that Cable's time travel method works, essentially, is his temporal aura timeslips him to each temporal location without creating a variant. He possesses the body that timeslipped beforehand if he needs to "try again" for example.
Hence why when Deadpool shifted to the original...
Although according to Loki 2x02, there were 802 branches that still existed after Dox's pruning and possibly until the end of the show-onwards.
That doesn't include the timelines that branched off due to the events from What If thanks to Uatu, nor some timelines that could only be branched...
I like to think that 'TRN' and some of the "Phase One" games are part of this timeline (for condensing sake):
https://marvel.fandom.com/wiki/Earth-80734