In Deborah Ruf's book, 5 Levels of Gifted, she has an Appendix entitled: Developmental Guidelines for Identifying Gifted Preschoolers. It lists various tasks and the age normally developed vs. a 30% more advanced example.

An example:
Task: Looks at pictures in a book.
Normal months developed: 10
30% more developed: 7

She lists 26 tasks starting at one month with, "Smiles socially at people" through 50 months with, "Draws person with neck, hands, and clothes".

Is this what you're looking for?

I have learned a lot from her book, btw.