Most people are on 3D timeline, some are on 3D and 5D or new earth, and some are fully on 3D, 4D and 5D.
We have many matrixes we are connected into.
At this moment we are disconnecting from every matrix within our universe.
See example picture below
Everything is overlaid and connected into the overall matrix as well as into each other.
We are disconnecting from everything and only connecting onto the new earth matrix into such a way that disconnection will only take one action and will be automatic during full ascension.
Every other planet within our universe has its own matrix as well as many races have their own matrix. Like the arcturians, sirians, pleiadians and more
Even upon earth there are several.
The matrix is like a computer with an overall program, like windows.
There are several other programs running on this using windows as their communication system. But there are also some programs (matrixes) that run on their own within the overall program.
Most of the programs are running holographic experiences, but are also creational programs used to create a certain experience for beings within the matrix.