The photo in question is without any doubt is a Ficus microcarpa Ginseng root stock, grafted with another compact variety of F microcarpa, in which I can't be certain, there are many variety available in the market, many are un-named, but mostly a compact form (similar/related to) F microcarpa var crassifolia (or often labeled as F taiwanensis in trade), such as 'Green island'
Grafted ginseng fig is very popular, as the caudex is only produced by plant grown from seed, (similar to Adenium), but the leaves are not as interesting, they are larger and less compact. so grafting is the way to create a nice plant. It is mass produced in southern part of China and else where
https://www.chineseplantsnh.co...
Here is how i see the differences
Ficus microcarpa has lenticels horizontal lines on their bark, in some variety it is prominent such as in Tiger bark fig, which is also a variety of F microcarpa
Comparison to Adenium
Adenium do not show horizontal lenticels, there could be horizontal lines on some but it is usually stretched leaves scar
