Boxleaf Euonymus (Euonymus japonicus microphyllus) would be my guess. Possibly a cultivar called 'Butterscotch.'

Where are you located?

Hickory, NC .

Where could I find it?

Thanks

They probably grow too slowly for the Big Box stores to carry them. You can find them mail order. But I'll bet you can also find them at a good nursery in Charlotte.

They probably grow too slowly for the Big Box stores to carry them

A Small Box-leaf store would seem more appropriate

The alternative to warehouse stores is independent garden centers. In my area there is a huge difference in selection between the two categories.