Germanconnection;
According to my reference below,
Q235 is under T13788-2000, which is a cold rolled ribbed steel bar specification for the reinforcement of concrete...
E220 is under a specification for steel tubes for precision applications...
DC01 (no AM) is under multiple specifications
EN 10270-2
EN 10130 for cold rolled low carbon steel flat products for cold forming...
S255JRG2 I believe should be S235JRG2, is under specification EN 10250-2 for open die steel forgings.
or J355JRG3. I have no current listing. There is an S355JRG3 under the same specification above (EN 10250-2).
As you can see you have various product forms. Chemical composition ranges were listed but I did not want to list them because of time and space.
If you want to compare, obtain the necessary specifications mentioned above and review them for a proper comparison.
Source; Stahlschl[ü]ssel 2007