Um, for a second time.
Look at Michelson-Gale, don't look at Michelson-Gale-Pearson. That's a different experiment.
Michelson-Gale does indicate an ether.
Michelson-Gale-Pearson was another attempt at a Michelson-Morley experiment and again returned a null result for the motion of the earth around the sun.
There seems to be a mix-up of Michelson-Gale(-Pearson) and Michelson-Pease-Pearson. Do you have any links to them?
AFAIK, all of them tried to find an effect of lateral (MPP) or rotational (MG) movement relative to an ether (or aether, if you prefer so).
Michelson-Gale-Pearson was another attempt at a Michelson-Morley experiment and again returned a null result for the motion of the earth around the sun.
As I said, it's about a movement through the ether - the movement around the sun is something different.
But, to come closer to home:
Do you think that the moon revolves around the (center of the) earth? Or do you allow for earth and moon revolving around their center of gravity, i.e., the earth wobbles :-) ?