Around here it was always the same, low stakes or high stakes it was 10% of the pot with a $5 maximum.
Now I've never been involved with a home game that hosted celebrities, they might rake more?
Usually has more to do with what you are doing. If you're running an ongoing game you have to keep the rake reasonable.
Players aren't stupid, you rake $10-$25 a hand and it really adds up. They aren't going to let you get away with that.
Pro's hate to tip the dealer a dollar because what it can do to their hourly rate, they surely aren't going to let you rake big amounts.
Now if you run a game on like a cruise or somewhere you are never going to see the players again, we call those "snatch" games.......
The dealer is going to snatch as much as he can out of every pot, LOL.
If you run a game twice a week in town you need to cap it at $5 or so regardless of stakes.
You'd be surprised how quickly even that adds up for the house.
I have no clue about any of this, just repeating what a friend told me.