I am coming to same conclusions still.
Pullets except keep watching RIR. Feathering looks pullet still but comb is big so could go roo. Still can't sex silkies...I am going to have to watch and learn.
All look like pullets but the Silkie's ? Got my first Silkie to keep a single hatch company, both will be 4wks on Thurs, no idea how to sex a Silkie. Read they are harder and mature later.