In my experience, all women are different.
There are four zones which can trigger orgasms, the clitoris, g-spot, epicenter and AFE zone. These areas usually have a large number of nerve endings which make them very pleasurable to the touch but different women have more or less nerve endings in zone each - women with more in her clitoris will prefer oral whereas some women get more sensation from penetration.
Different positions will stimulate different zones and trigger different types of orgasm.