IF you are sizing for dwelling units, then 310.15(B)(6) is the correct table to determine service conductor sizes.
You say grounding electrode conductors to ground rods - 250.66(A) says #6 copper to the rod regardless of the service size.
Bonding?...bonding what?
Main Bonding Jumper? 250.28(D) says to use Table 250.66 and size your jumper based on the size of the service conductor
Bonding to water pipe (dwelling water service) - 250.66 says to use Table 250.66
Bonding jumper used to connect grounding electrodes together to form the grounding electrode system - 250.53(C) says to size per 250.66
Bonding metal water piping systems installed in or attached to a building - 250.104(A)(1) says to size in accordance with Table 250.66
