I am not a stream winner or once returner.
Whats more I dont think they exist.
I think that is an indicator of the sclerosis and institutionalisation that already at an early stage was inevitable in any human organisation and which results in a systematic heirachy .
It reduces the Dhamma to a cattle show with different coloured rosettes...
" Dont be a Bodhisattva, dont be an Arahant...dont be anything. As long as you are anything you will suffer. "
Luang Por Chah.