To answer my own questions, I just did the migration.
1- The keywords DID come over.
2- The photo that I see in LR CC is the edited version from Apple Photos.
About your second point "The photo that I see in LR CC is the edited version from Apple Photos". Really? Did you get the cropping, rotating, light adjustments etc successfully migrated over from Apple Photos to LR CC? How did you perform the migration? Using the built-in "Migrate from Apple Photo Library" function (i.e. via the menu under 'File')? I did the migration using that function and unfortunately only got the originals migrated, not the edited version... Hence I am interested in your confirmation, before retrying the migration process. Thanks
Remark: I am talking about JPG files, not RAW. I know RAW edits are not carried over.
I also read that page you shared from Adobe. It describes quite some particular cases (busts, live photos etc...). Unfortunately it says nothing about the most common case: Edits to regular photos. Would be nice if Adobe could augment that webpage with a clear statement about it. Do you know the answer? Thanks