If they are less than a week old, they are both drakes.
If they are a week +, you will have to wait until their voices change, which will take about 8 weeks or so.... unless you have pix of them when they were less than a week old.
The Welshies and KC babies are similarly easy to identify...
How old were they when you got them?
Beak sexing is fairly reliable in the first 5-7 days, if you got them that young and have photos.
I had KC hens, but have not had a drake.
They were pretty evenly colored, although some of my hens did have a bit of a “hood” when they were young.
Def a...