My carrier, Castiana V6X-BHV, just finished support operations for the
- AspX (3), Dolphin (3), Sidewinder (23), Viper (7). (All the DBXes were sold.)
- Fuel scoops, A-rated, sizes 1-6
- AFMU, A-rated, sizes 1-7
- SRV hangars, 2G, 4G (Explorer's Anchorage has these too)
- Fighter hagars, 5D, 6D
- Power plant, A-rated, sizes 2-5
- FSD, A-rated, sizes 2-6
- Sensors, D-rated, sizes 1-5 (Explorer's Anchorage should have these too)
- Distributor, A-rated, sizes 1-5
- Thrusters, A-rated, sizes 2-6
- Shields, A-rated, sizes 2-6
- DSS, Heatsinks, advanced docking computers, supercruise assist
- Various size 1, 3, 5 D-rated limpet controllers – collector, decontamination, fuel transfer, prospector, recon, repair, hatch breaker, research (you can get cargo racks for limpets from Explorer's Anchorage)
There is no mark-up. The "bad for exploration" A-rated modules were a limitation of the fleet carrier stocking interface, so couldn't be helped. Explorer's Anchorage itself sells many of these modules in the D-rated flavor. So between the station and my carrier, you should be able to put together a decent explorer ship build.