Star polyps, button polyps(brown or green), and yellow poyps..
These are probably of the most forgiving as far as lighting goes, however they still require high water quality, but don't require any additional feeding. The can survive under low-med light, but will thrive with better lighting. Good water movement is also essential, my star polyps seem to do best in a med-high current, it keeps debris from building up around them.
They can multiply rapidly under the right conditions. These I would recommend as good starter corals.
MCF