Iris Cohen wrote:

You have a Polyscias, possibly P. balfouriana. Unfortunately, they are
really conservatory plants. Doesn't need a lot of light, but in the
winter your house may not be warm or humid enough. Watch out for
spider mites and all the other ills typical of the English ivy family.

Thank you, Iris. After a bit of browsing, it looks like my plant is
Polyscias fruticosa (Ming Aralia).