I'm not going to give you a numerical rating because that won't be very helpful:
Shoulders are way more developed than anything else from the back. You need a bit more triceps and a lot more biceps for arm balance.
Leanness looks good from the back, thickness is your problem. Deadlifts are a great start, but you need to be doing lots of rowing (upright and bent-over). I recommend a balance between going lighter in weight and really squeezing the muscles at the top of every rep to learn how to feel your back working and the heavier stuff like DLs. That should help you get more out of stuff like DL's. I like power cleans for thickness as well, but similarly to DL's you'll need to learn how to recruit/feel your back muscles before you get much size from going heavier.
You could use more lat width too (stuff like chins and pulldowns- the seated ones and straight-arm stuff will help). But again, you should really be squeezing hard at the peak contraction of each rep and learning how to feel your muscles work. I'd say your thickness is worse than your width though.
Make sure your nutrition is solid or you're SOL though.