McChooky
Free Ranging
Looks 100% like a Welsummer rooster to me( purebred at that)I don't think he is a laced Barnevelder. There is no lacing on him I can see. Some Dutch bred ones may have black breasts but should still have some lacing elsewhere I believe.
Your feathered footed chicks are obviously half Brahma.
My barnevelders did feather out initially with that partridgey juvenile feathering before the lacing came in.
You've got laced chicks I reckon.
Pic of one of my Barnevelders - see lacing.View attachment 3126842
and as chicksView attachment 3126844
Simple hatchery mistake.