What orientation would other dimensions be to ours?

There are theories that there are other dimensions out there, some maybe overlapping ours this very moment. But if one can decipher another dimension how do you figure it would line up to ours? Would the dimensions be like skin or layers of an onion with us being one of the layers and the other dimensions being the other layers? That maybe the ”layer” has chips or tiles on it and they are individual dimensions? Maybe the different dimensions are like soap bubbles floating around some plasma ooze? Do all the dimensions taking the same track but different; if you had a large dog in this dimension, you would have a small cat in the other dimension, etc? When the dimensions touch if one was able to channel the right energy wave, could you cross dimensions? How do you believe it would work?