The corner aft-facing staterooms are Haven suites.
If you're asking about the aft-facing B1s, the only stateroom configurations are bed near balcony and bed near closet.
Balcony depth differs by deck. The size order from deepest to least deep is 9, 12, 15, 14, 11, 10, 13. There are also differences in balcony width. The most narrow on each deck other than deck 10 is the balcony directly to the port side of the wheelchair accessible B1. Deck 10 is different as it has 2 wheelchair accessible Club Balcony staterooms instead of 1 wheelchair accessible B1. In that case, the port side M6 has the more narrow balcony.
Feel free to ask any questions.