Led SML/SMT and resistors R/M
Don't waste time on the libraries that come with Eagle.  They were created by various different people, don't follow any coherent conventions, and won't likely work with your conventions for BOM information, generating the assembly drawing, parts locator, in-house part numbers, etc.

When in doubt, go make your own library part.  It's a useful skill on its own, and once you've learned it, it's quite easy to do.

By the way, unless these are power LEDs, you're probably better off using 0603 types.  Those tend to be cheaper and more available than 1206.