Wow! I didn't know about mame bonsai, so I looked it up... super minature bonsai, under 6" tall!
Here's a mame bonsai gallery, showing a range of trees that have been styled as mame.
Note that a number of them have links for bonsai progression series, that show the steps in how they were created.
However INDOOR mame, seems to be a tall order. None of the ones in this series with the possible exception of the cotoneaster, will be very happy staying indoors all the time.
I did find this:
https://www.fukubonsai.com/5a17.html a serissa done mame style
and this one:
mentions ficus as one candidate for mame
Note that in the first link, the first progression series, the fuji cherry, he describes about a decade of working on the tree to get it to the end stage pictured.
But making a super mini bonsai, does seem like it might eliminate some of the years growing out a tree to thick trunk size needed for a "full size" bonsai (sort of a contradiction in terms?). Since trunk size (diameter) is proportional to height, by doing a shorter bonsai, you could get by with less trunk size.