Many things we cant sort out, but there are 2 types of seed that i believe are infact a single strain:
1: the small , blackish, round seeds are one strain
2: there is a type with : deep brown, a saturatet brown, you know like precious furniture, opposed to a non-saturated brown-rough look to it as marked in red. Middle thickness they are.
I see a CERTAIN chance of those beeing one strain too.
The original pic: