For the SDS a small selection of 5, 5.5, 6, 7, & 8mm will cover most holes for fixing situations. Armeg did a set in a little plastic box at one time that had all the basic sizes pretty cheaply.
You may find you need some longer bits for going through walls - 10, &
16 and 25mm are probably the most useful sizes.For SDS chisels, a couple of 20mm and a 40mm will get you started - ideal for chasing, and cutting boxes out etc, and light demolition.
A set like:
Treat that to a set of Bosch multi material drill bits in the basic wall plug sizes:
If you need to drill big holes in wood, then these are very good: