As for godparents, they are going to need alot this time, a few per child...I think they might use:
Princess Marie (and maybe even Prince Joachim if he hasn't been used before)
Prince Daniel
Patricia Bailey (sister)
John Donaldson (brother)
Helle Reedtz-Thott
Princess Maxima (is she godparent to C or I already?)
Princess Marthe-Louise
If she uses Patricia and John, all siblings get an 'allocated' godchild...Jane is already Isabella's...She will probably want new members of the royal family to be included, like Marie and Daniel...And she will probably want some unconventional royals, like Marthe-Louise, to be used, because as children #3 & 4 they might have to find other avenues of endeavour, rather than just 'waiting for the throne' like Christian, and to a lesser extent, Isabella...And lastly, dear and loyal friends, like Maxima and Helle, rather than influential royal contacts, that Christian has...
Amber Petty will never be asked or used, because I am cynical about the role of godparents, I think their role is to offer something to the royal family in return for that special relationship...I don't think Amber has anything to offer the family...Yes, her and Mary are old friends, but you can be a friend but not necessarily a godparent...