You will see several types of wood i think the lightest may be birch or maple but maple can often come with some beautiful but dark streaks through it.
Wood planks over drywall.
The other key to using reclaimed wood on your interior walls is to thoroughly clean and dry the boards before installing.
How to clean and install reclaimed wood to use inside the house.
Planks can be nailed directly into drywall if running parallel to joists as long as the planks are lightweight.
When you install wood boards planks or paneling over drywall the surface of the wall moves out by an amount equal to the thickness of the wood.
These medium density fiberboard wood look planks are prefinished for a far easier fix than repair or replacement.
The planks are perfect for decorating damaged or plain drywall ceilings.
Determine how planks will fit on ceiling and make any necessary cuts on a chop saw.
For example if planks are running width wise in a 12 wide room and 8 long planks are being used cut several planks to 4 long.
But yes you could finish it with wood afterwards and here is a link to a page that may help for choosing a wood type it is about installing wood ceilings cost compared to drywall.
When installing shiplap over drywall start with battens on finished ceilings family handyman if you re installing tongue and groove boards over drywall or plaster especially it s a good idea to install 1x2 battens and fasten them directly to the framing with 2 1 2 in.