ZL1 vs SS-1LE Brakes
 

Do all ZL1 (whether ZL1 or ZL1-1LE) calipers have ZL1 on the caliper? Or do the ZL1-1LE have 1LE?

zl1 has silver ones and zl1 on it... 1le and zl1 1le has 1le and they are both

Not all the same. Only the non-1LE has ZL1, the ZL1 1LE has 1LE. Google "2018 zl1 caliper" and look at images. The silver ones with ZL1 are the non-1LE calipers, and the red ones with 1LE are the ZL1-1LE calipers.

From your title, I assume you're looking at something to do with SS 1LE brakes? Keep in mind those brakes are slightly smaller than the ZL1 1LE brakes even though both are red with 1LE on them. There are different rotors and brake hoses between the two setups as well IIRC.