To clarify from our previous threads, let's use the tree analogy that Paradox used alongside the graphic I made prior.
Each parallel dimension is like a tree stacked one on top of the other.
Each tree can branch off ad infinitum.
At the moment, the number of "trees" part of "the universe" is being discussed.
Let's look at the Map of Infinity. It is a complete map of space-time, extending through 17 dimensions.
If it's talking about the ad infinitum timeline branches from one tree, this description wouldn't work.
It does work if we say that the map is complete for 17 "trees" of space-time. After all, one of the pieces was placed in Ledgerdomain.