You forgot GPay! Which I think is a different app (I mean, it has a different name...) though I can't say I'm sure (Wikipedia says they're the same, but the source they use directly contradicts them). It's really comical at this point.
The previous Google Pay app was definitely killed off and you had to install "GPay" instead. I /think/ Google Pay may have been a rename of the original Android Pay app, but not sure.
In India, it was Tez, then Google pay (IIRC two apps with this name existed at same time), then Gpay.