Yeah, LIP is right, you won't get very far with 5 plants in one pot. That's 5 times the root mass compared to one. Ha ha! They won't make it very far.

The best thing to do is try and get 4 of them out and into their own container, that way, at least 1 plant will grow. Try to keep the strongest plant in the one pot, and seperate the other 4 and hope for the best.

As for strain, impossible to tell as there are literally hundreds of thousands of different kinds of cannabis. People can mix 2 strains together in their own home because it has become that easy, so the strains are endless.