Also, to explain the same strain/different leaf formation. Since you started from seed, for all of these, even the same strains will not be of the SAME DNA and wont portray the same phenotypes. Think of the plant that developed your seeds, she's not pushing out 100-1000 twins, they're all of a different genetic make up of the two strains crossed for the seeds. So when starting from seeds, even of same strains, you will see a number of different phenotypes but usually similar in some ways. Whereas, different strains entirely can prove to be drastically different in many ways. The idea is to find the plant that does the best and has the qualities you like in the plants growth and smoke, then clone. Clones will all be of the same genetic make up as your mother causing for the same phenotypes each time.