I think the results of 2023 matched the 'returning production' values in many ways, but there were some curious exceptions. Injuries make a difference. I get that. I don't follow Iowa football, but I suspected that they had a lot of experience on defense, hence their continual strong defensive results in spite of a non-existent offense. I've clipped some of the interesting numbers and pasted them below. They're from Bill Connelly's Feb 7, 2023 ESPN column. I think I can do that permissibly, after citing the source. If I'm wrong, I'll learn shortly, I guess. But I'd like to hear discussion about the subject. 

I hope Connelly produces the column again this year

Returning Production For FBS Teams In 2023
TEAM RET. PROD. OFF. (RK) DEF. (RK)
1. Florida St. 87% 80% (12) 94% (2)
5. Michigan 81% 84% (4) 78% (16)
19. Texas 74% 85% (3) 63% (68)
22. Washington 73% 74% (34) 73% (30)
23. Rutgers 73% 73% (37) 72% (31)
27. Wisconsin 72% 75% (30) 68% (48)
32. LSU 71% 81% (10) 60% (72)
36. Clemson 69% 64% (73) 75% (23)
39. Nebraska 69% 72% (45) 66% (51)
41. Indiana 69% 65% (63) 72% (34)
44. Notre Dame 68% 65% (67) 72% (35)
45. Michigan St. 68% 80% (11) 56% (83)
48. Ohio St. 67% 57% (97) 77% (20)
54. Oregon 65% 65% (65) 65% (58)
56. Penn St. 65% 55% (102) 75% (24)
57. Purdue 65% 71% (49) 59% (76)
65. Maryland 64% 64% (68) 63% (66)
69. Tennessee 63% 57% (96) 69% (44)
71. Illinois 63% 64% (71) 62% (70)
73. Kentucky 63% 71% (48) 55% (86)
80. Georgia 61% 52% (109) 70% (42)
87. Minnesota 58% 59% (91) 57% (78)
94. Iowa 57% 64% (72) 49% (102)
96. Northwestern 56% 46% (115) 66% (52)
99. Louisville 56% 61% (85) 50% (100)
125. Alabama 40% 43% (120) 38% (127)