[aerohead]

The De Havilland Mosquito "wooden wonder"
of WW-II fame nailed the compound curve issue.But not with plywood.
They had concrete female half-molds of the fuselage in which plies of sheet wood and adhesive were interlaced,then a tailored rubber bladder was inflated within the mold,ramming the plies against the tooling until the glue went off.
That would be the gold standard for fabricating.
I have used Lauan 1/8-inch door skin,sealed with cheapo polyester resin for single-curve panels.As long as you can keep the moisture out you're okay.
As the other members have mentioned,the marine plywood is great as well as the bendable plywood.
Papier Mache or strips of brown paper bag with starrch can also be used for compound curves.Lighter,or as light as carbon fiber epoxy when sealed with resin.