not quite correct...
Sadowsky Japan had two original ranges - the higher end Japan only Sadowsky TYO and the Sadowsky Metro which were available over here. I think they were manufactured by ESP.
At some point the line that were Sadowsky Metro with "Sadowsky Guitars" on the headstock became known and labelled as Sadowsky Metroline with I don't think any differences other than ones that affected all sadowskys- I can't remember anyone saying anything negative about them (other than the price went up, but it was the post Brexit pound devaluation that caused that).
Roger then wanted to make a cheaper line again - which was the Japanese Sadowsky Metro Express which were built by a Japanese factory for him that wasn't the same dedicated workshop as was doing the construction of the original Japanese Sadowsky. I'm not entirely sure what happened, whether there were too many QC issues being caught or they just couldn't make enough of them fast enough but they didn't last long.
Then our friend Mr Wilfer got involved and everything changes, all the hardware is different and presumably made to different price points for different ranges - so you no have the odd Sadowsky NYC from Roger's workshop and then the German made Sadowsky Custom Shop, Sadowsky Masterbuilt and Sadowsky Metroline, and the much cheaper Sadowsky Metro Express made in China.