how many meditations have the word 'sati' in there? what are all the practices that are "great fruit, great benefit"?
Since the first question was answered superbly by DD, I'll try to answer the second one:

In essence, everything the Buddha taught is to be done again &amp; again, ad nauseam, so that it's "of great fruit, of great benefit", otherwise he'd not have taught it. The Noble Eightfold Path is often also called The Threefold Training.

AN 7.46 is basically the short answer to your question

https://www.accesstoinsight.org/tipitaka/an/an07/an07.046.than.html