They are both properly labeled at the top of the pages in bold print. They are both for 634 and 684 subsets. One diagram has the old 146A induction coil and the other has the newer 101A induction coil.

Both subsets are electrically equivalent to each other, and the 302 as a subset is also electrically equivalent to a 634 or 684 subset.

So I would label the one that has the tubular induction coil (146A) something like "634 - 684 subset with 146A induction coil", and the other one that has the transfromer like induction coil (the 101A) something like "634 - 684 subset with 101A induction coil"