"I have many variables..."
Uh oh... that sounds like the start of a question caused by badly designed code/data.
"...they are all related to one another..."
The sensible way to handle "related data" would be to put them all into container arrays (e.g. cell array, structure array, table, etc.) or numeric arrays if possible.
"I was wondering if there is a way to create like a sub folder of variables within the matlab workspace? so that certain variables are easier to find."
Yes: they are called "arrays": container arrays if you have to or numeric arrays if possible. Using arrays is the key to writing neat and efficient code without thousands of badly named variables polluting your workspace. Using arrays like that makes data easy to "find" because it never gets lost in the first place. It also makes processing your data simple and efficient using loops or vectorized code.
"for example i have variables called A1z, A1o, A1t, A1T..."
Then you have badly designed data and should be using arrays. Your variable names seem to contain meta-data, and that is a sign that you are are doing something wrong with your code/data design: the simple and efficient alternative is to use arrays.
