Any Chinese tea or Japanese green tea... wulong/oolong,
pu er, jasmine, etc can help in weight loss because all these tea
are drank without adding sugar, Some teas have some benefits that
others do not have, like relaxing the body and mind, reduce
heatiness and so on. It is a total study to know the
benefits.
However these tea alone cannot help you lose weight. You will need
a change in your diet and some exercise.