From Wiki Answers:
Obeche
* Latin name: Triplochiton scleroxylon
* Family: Sterculiaceae
* Common names: Abachi wood, Obeche wood, African maple wood, Samba wood, Ayous wood. (and apparently Blonde Sapeli)

20 years ago I shopping for obeche and the guy I was talking to called it "African Samba Wood", so that may be a common term for it, and a thin veneer product can also be referred to as "flitch stock".

Hollow core door skins and underlayment plywoods are usually "philippine mahogany"

Wikipedia:
In the US, Philippine mahogany, aka lauan, is the common name for a wood yielded by some species of the genus Shorea, or perhaps more accurately the name for a group of woods. These are medium density woods, with rather favorable properties, but they are not a mahogany, nor are they comparable in quality. It is not necessarily imported from the Philippines, nor is it limited to species which occur in the Philippines. COMMON NAMES: Lauan, Philippine mahogany, meranti, red meranti, white meranti

This stuff would make a poor veneer for foam wings. A single thin ply is very unstable (wavy) and splinters easily. Strength across the fairly open grain is very poor.

Dave