There are four main chipsets that I know of which are based on socket 1156.
P55, H55, H57 and Q57.
The P55 is the mainstream chipset, and is the type of chipset which would normally have more overclocking features.
H55, H57 and Q57 have integrated graphics, and generally the H57 boards have a few more features than the H55 boards, while the Q57 board has security features intended for businesses. Note that the integrated graphics comes from the graphics chip on the CPU, not on the motherboard.