This from football outsiders has a few surprises, and good info, DYAR rank
http://www.footballoutsiders.com/stats/qb
QB Ranking/QB/Pick used
Top Tier:
1: Manning – Rd1, 1st overall (signed as FA)
2: Rivers – Rd1, 4th overall
3: Brees – Rd 2, 32nd overall (signed as FA)
4: Ryan – Rd1, 3rd overall
5: Foles – Rd3, 88th overall
6: Brady – Rd 6, 199th overall
7: Romo – Undrafted (300th for math)
8: Kaepernick – Rd2, 36th overall
9: Wilson – Rd3, 75th overall
10: Rodgers – Rd1, 24th overall
Middle Tier:
11: Roethlisberger – Rd1, 11th overall
12: Stafford – Rd1, 1st overall
13: McCown – Rd3, 81st overall (Journeyman signing, likely not a middle tier QB)
14: Luck – Rd1, 1st overall
15: Palmer – Rd1, 1st overall (Acquired for 6th round pick)
16: Dalton – Rd2, 35th overall
17: Newton – Rd1, 1st overall
18: Cutler – Rd1, 11th overall
19: Bradford – Rd1, 1st overall (make or break year)
20: Smith – Rd1, 1st overall (Acquired for conditional 4th round pick IIRC)
Bottom Tier:
21: Fitzpatrick – Rd7, 250th overall
22: Glennon – Rd3, 73rd overal
23: Cassel – Rd7, 230th overall
24: Locker – Rd1, 8th overall
25: Clemens – Rd2, 49th overall
26: Tannehill – Rd1, 8th overall
27: Vick – Rd1, 1st overall
28: Hoyer – Undrafted (300th for math)
Sub Replacements:
29: McGloin – Undrafted (300th for math)
30: Campbell – Rd1, 25th overall
31: Ponder – Rd1, 11th overall
32: RGIII – Rd1, 2nd overall
33: Thad Lewis – Undrafted (300th for math)
34: Chad Henne – Rd2, 57th overall
35: Schaub – Rd3, 90th overall
36: Freeman – Rd1, 17th overall
37: Manual – Rd1, 14th overall
38: Keenum – Undrafted (300th)
39: Flynn – Rd7, 209th overall
40: Flacco – Rd1, 18th overall
41: Cousins – Rd4, 102nd overall
42: Eli Manning – Rd1, 1st overall
43: Geno Smith – Rd2, 39th overall
44: Pryor – Rd3, Supplemental (75th for math)
45: Weeden – Rd1, 22nd overall