Couple questions: linds plays more of a 10 role right? Rose plays more of an 8 but I feel like she could play a very good 10. Christen is more of a 9 right?
I would use the 10 role loosely when it comes to the US because they don't really have a "playmaker". Horan is a good CM but she's not NECESSARILY a dedicated 10. She does have good potential for it. Rose, on the other hand, is more of a playmaker. She doesn't always score for the passes she makes, the only problem is when she does get a chance to play bc of injury someone else takes up the 10 role. However they both have huge 10 potential.
Christen is a 9/7, especially in this formation. I still stand by the fact that she'd be a great midfielder, because her game is very fluid BUT yes, she's playing a pure running striker right now.
you absolutely can play two 10s, the same way that you can play two 6s. It just depends on the shape of your lineup. Right now, the lineup doesn't really have a 10 BUT they do end up playing 10s. Ertz is lined up just behind the midline, ahead of the backline. Lindsey and Rose are playing 8s, down the wings, HOWEVER bc the LB and RB move up, they usually end up in the middle playing and sending passes to the strikers and helping in recoveries.
So TLDR: the uswnt usually ends up with two 10s whenever they play because the side defenders move up, Christen is playing striker and a very speedy forward core right now with her and Lynn, and Rose and Lindsey aren't there yet for their 10 positioning but they do have big potential for it.