why not go to the websites of the breed clubs of the breeds you are breeding and study the standard and talk to experts? why learn the hardway instead of the easy way?
i cant tell you much about any of the birds posted because of the positions and quality of the pics, but ill tell you one thing, that cochin is spash, she has 3 different colors, she looks a tad dark, but proper for a blue splash. the reason people think she is blue mottled is because they are used to seeing washed out crappy splashes. if you breed splashXsplash you will get washed out splashed birds. for proper spashing, you need to breed blueXblue, and for proper blue you need blackXblack, and for good black you will need mottled, and for good mottled you will need black. its a complicated process, i have every color of cochin listed above, except splash, but i do have a blue mottled, and a barred. by 2012 ill have blue barred as well.
and about what you said about her not being a mottled because she has "too much white", proper mottling is characterized by every other feather ending in a white tear drop, so theoretically, proper mottled has white evenly distributed throughout the bird, and does NOT have solid white feathers.
here is an example of a good splash coloring (not too dark, not too light)