nandrolone is 19-nortestosterone. there is a methyl group added at carbon #19 in the steroid ring. Neither winny nor dbol are 'nandrolones.' Furthermore, winny and dbol bear no strong relationship with eachother, either. winny is a dht derivative, and dbol is a testosterone derivative. winny doesnt aromatize well, dbol aromatized very easily.
your question is all over the place bro. Moreover, the structure you speak of has little to nothing to do with the half life and thereby the detectability. that is determined by the presence of a methyl group at the 17 alpha position, or by the length of the ester added to the hydroxy group next to c17.
bottom line, respectfully, ya need to crack the books here bro. this stuff is all out there, waiting for you to google.