Does USCIS have Multiple NOT SELECTION in H1B Letter formats?

I have received a different NOT SELECTED H1B letter from employer who filed my spouse petition.

for Another guy applied from the same employer has got a different not selected letter which is tallied with the sample letter from this forum and it is tallied.

I WOULD LIKE TO KNOW HOW MANY DIFFERENT NOT SELECTED H1B LETTER FORMATS TODAY USCIS IS MAINTAINING?