Sorted by traffic flow:
5:50 Stack interchange (2-lane ramps) [TF: 1099]
5:40 Contraflow left [TF: 948]
5:30 Turbine [TF: 927]
5:20 Pinavia [TF: 905]
5:10 Diverging Windmill [TF: 808]
5:00 Custom Cloverleaf [TF: 758]
3:20 Diverging diamond interchange [TF: 644]
4:20 Partial Cloverleaf (Parclo A4) [TF: 639]
4:40 Three level roundabout [TF: 623]
2:40 Continuous flow intersection [TF: 618]
4:30 Two level roundabout [TF: 598]
3:30 Single Point Urban Interchange [TF: 581]
4:10 Partial Cloverleaf (Parclo AB2) [TF: 570]
4:00 Partial Cloverleaf (Parclo B2) [TF: 570]
2:20 Custom roundabout with slip lanes [TF: 532]
3:10 Diamond interchange (with custom traffic lights and slip lanes) [TF: 529]
3:50 Large Dumbbell [TF: 528]
4:50 Standard Cloverleaf [TF: 516]
2:30 Turbo roundabout [TF: 501]
1:40 8-lane roads with slip lanes [TF: 490]
1:20 6-lane roads with slip lanes [TF: 465]
3:00 Diamond interchange (with traffic lights) [TF: 448]
2:50 Diamond interchange (no traffic lights) [TF: 448]
3:30 Dumbbell [TF: 443]
1:30 6-lane roads plus slip lanes [TF: 432]
1:00 6-lane roads with custom traffic lights [TF: 417]
1:10 6-lane roads with protected left turns [TF: 416]
2:10 Large roundabout [TF: 360]
2:00 standard roundabout with highway road [TF: 340]
0:30 4-lane roads plus dedicated left turn lane [TF: 320]
0:20 4-lane roads with custom traffic lights [TF: 303]
0:50 6-lane roads with traffic lights [TF: 251]
0:10 4-lane roads with traffic lights [TF: 235]
0:40 6-lane roads without traffic lights [TF: 205]
0:03 4-lane roads without traffic lights [TF: 191]
1:50 Standard roundabout (no mods) [TF:8]???
“Sorted by traffic flow:”
It would be interesting to see a table like that along with average construction cost, accident rate, and traffic deaths. It seams we could easily discard the functional but non economic as well as eliminate those that create safety hazards.