Can you provide more pictures? Of a leaf full on and maybe the stems?

If it is a cane I would suggest Teen Angel or Avalanche. If it is a rhizomatous then I don't know.

Not a cane. It may be a new hybrid rhizomatous or an older one I don't recognize. Where did you get it? The big 3 box stores use Exotic Angels/Costa Farms for a lot of houseplants which includes begonias. The problem is the website is usually not updated on a regular basis.

If you are on FB and then a member of Planet Begonia, you can post it there and hope someone knows the name.

Awesome, thank you for the help!