Mr. Willett, which ones above would work better for studio work?
It depends on the studio, it depends on the piano and it depends on the music.
There are probably as many ways to mic. a piano as there are recording engineers.
You choose the technique and distance to match the the piano, music and venue. Some need more close miking than others.
If you are recording several instruments at the same time you also need to get the balance right.
Underneath can work in many situations. Boundary mics on the floor can work well, as can boundary mics on the lid. Normal SDCs pointed at the lid and about 1mm away can work pretty well at imitating a boundary mic..
But it's really a matter of using your ears to hear what sounds best in the space - move around, closer and further away, and use what you hear to find the best place to put the mics.
There is no hard and fast rule and everyone has a different theory.
I hope this helps.