Variation of static fee rate is to use static base fee (or eat all you can buffet). Here you setup a static base fee (say 199 Sats 199000 mSat) and a fee-rate of 0 ppm. Any routes passing via your node will pay a fixed fee 199 sat. Naturally this favours larger transactions over smaller transactions (for example 199 fee for 2 000 000 sats is reasonable but for 1 000 sats is very expensive).
This fee policy can work for you and you can find the sweet spot for your node which balances the number of transaction, transaction size, and effective fee earned. It will also be a simple process that each forward will earn you same fee.