Not absolutely sure
But from my limited experience, I would say
Japapeno M if you want a true strain
Biker Billy Hybrid from Burpee was bigger and more pods but is a hybrid....
Jalapeño Early has always been a failure for me. Small weird pods... Not a lot of them.
This year I am growing
Craig's Grande Jalapeno (heard great things about it)
Cracked Jalapeno (from PepperLover)
Giant Jalapeño (seed exchange)