a 25mm is used to remove the oil pan plug but a 1 inch wrench will work as well

18mm i use for the nut on the front control arm bushing and seldom anywhere else

19mm is a 3/4 socket

10 all the time
11 for flarneut brake lines
12,13,14,15 all the time
16 here and there
17 all the time
19 all the time
21 once in a while

the strut nut i use a 15/16 airpowered socket or a specially modified 15/16 offset wrench