What you either ignore, or don't feel the need to point out in your little chart here is that 1) you cannot petition your parent or sibling until you are 21 years old, and 2) if you came over the fence, i.e. from Mexico WITHOUT some sort of visa, be that student, worker, etc. You CANNOT apply for a green card, EVER.
Immigration laws are much tougher than the average American realizes. If you don't believe me, check it out for yourself.
Immigration through a Family Member
If the sponsor is a U.S. Citizen, they may petition for the following foreign national relatives to immigrate to the U.S:
Husband or wife
Unmarried child under 21 years of age
Unmarried son or daughter over 21
Married son or daughter of any age
Brother or sister, if the sponsor is at least 21 years old, or
Parent, if the sponsor is at least 21 years old.
http://www.uscis.gov/files/form/i-485instr.pdf
10. Who Is Not Eligible to Adjust Status.
Unless you are applying for creation of record based on continuous residence since before January 1, 1972, or adjustment of status under a category in which special rules apply (such as 245(i) adjustment [this is the category any type of anmesty would fall under], asylum adjustment, Cuban adjustment, special immigrant juvenile adjustment, or special immigrant military personnel adjustment), you are not eligible for adjustment of status if any of the following apply to you:
C. You were not admitted or paroled following inspection by an immigration officer; (This would apply to any person who crossed the border without being paroled into the country - as opposed as to entering with a tourist visa).
There are a number of others, including working here illegally, and overstaying your visa. But it is this one that would not allow them to ever adjust their status, not even with an American child. So, as I said, citizenship will not benefit the parent. They took care of this little loop hole back in the 70s.
True blue, baby!