Are ERJ 190 and EMB 190 the same model?

It's the same model! ERJ was built by Embraer, formerly called EMB, and now it is called ERJ (Embraer Regional Aircraft). Some booking websites still use their original names.

Tianjin Airlines has 13 ERJ 190, and Kunpeng has 5 ERJ 190.

1997 10, EMB 145 were officially renamed as ERJ 145 to reflect their new market positioning. Embraer cooperated with Harbin Aircraft Industry Company, a subsidiary of AVIC II, to produce Brazilian ERJ- 145 series regional aircraft in Harbin. ERJ 190 is a new generation of jet airliner developed by Embraer. On May 2, 2008, the first passenger plane of Grand China Express and the first 100-seat regional plane of Chinese mainland-ERJ190 were successfully delivered and put into operation on June 5 of that year. (HNA Daxinhua Express has become Tianhang)