Hi TO
I've been away from the forum for yonks and have just started to get interested again.
I recently came across a site that has a number of staking plans in excel format readily available to download.
If you Google "Rising Floor Staking Plan" or "Rated Rising Floor Staking Plan" you'll find them easily enough.
One of them "could" be what you want.
If you can't find let me know.
Best of luck with it.

Bob