Hi Diana,
The best way to start is to add your parents and grandparents and build your tree back, or up, and you are likely to find ancestors already here.
https://www.wikitree.com/wiki/Help:How_to_Use_WikiTree
Here is a list of Mabrey ancestors, I used the Find menu, and then clicked on Surnames, then typed in Mabrey.
https://www.wikitree.com/genealogy/Mabrey
It looks like all the spellings you mentioned are included, and more!
I have a friend from High School whose name is Mabrey, if you start adding your tree perhaps you will find you are related to her, I know she would like to have new cousins.
