[DeathView]

1st - Aizen souske - baddass shikai / implied mastery of 4 arts / ability to use 90+ kidou spells with out chant / great Rieatsu

2nd - Stark - mainly because of power implied, being the primera when Ulquiorra strength is so great and ranked cuatro

3rd - Yama - jii - Stongest offensive zampaktou / loads of experience and Rieatsu

4th - Isshin / Hikifune - Being promoted above that of Captain rank is surely not an easy task

5th - Espada 2-4 - Vastolorde class are already said to be above captains, when adding strength by becoming an arrancar, you get beasts

6th - Captain class Vizards - they already achieved captain rank, gained hollow powers and have 100 yrs to master hollow + perfect bankai and what not

7th - Urahara / shunsui / Tessai - implied mastery 4 arts. lots of knowledge and experience

8th - Unohana / Ukitake / Yorouichi - they have been of captain rank for as long or longer then 3 above, but I don't think they are quite on the same level.

9th - Ichigo / Gin - quick learners / fast paced / great rieatsu / ichigo has sudden strength from resolve to make up for lack of experience and training

10th - Ryuken / Mayuri / Soi fon - calm but deadly warriors, very smart and have good mastery of combat abilities

Making this and choosing were people would go was harder then I thought it would be