Depends on the sets naming convention used
Standards are normally
(U) or (USA) for USA games
(E) or (Europe) for... you guessed it European games (Never does (E) = English, it always = Europe, even if it has English only that is just coincidence)
(G) or (De) or (German) or or or well that example is for a German only release even if it is a European release
(J), (E) & (U) games can have multi languages in them including English, so just grabbing the (U) (USA) roms does not guarantee you will have all the english released games, there are some European only games out there that are full english, depending on the system there are even some Jap and asian games that have english included in them e.g. Dead or Alive Extreme (Asia) is in English, but never got an EU or US release
Good Tools Naming standards are listed at
https://en.wikipedia.org/wiki/GoodTools
You are better off with a no-intro set if you just want a good copy of each game
good tool sets have tons of junk included in them from bad dumps to dodgy little mods there is even homebrew ect in there also