My DD sees my mum the most. She looks after her when we go out the majority of the time and she looks after her every second Friday. Then my Dad & his wife would see DD every few weeks to a month & they babysit from time to time.
DH parents live interstate, that is the reason they don't see DD hardly, but we try to visit 1-2 times per year and they come down to us 1-2 times a year. I think my mum would still see DD the most anyway, as my IL's have other grandchildren and work