It is like you already knew the answer but just having a problem to decide.
If you are always receiving deposits from people and you do not know where their coins are coming from and whether their wallet is compatible to yours, why not provide them all the options? Give them three addresses then, one bech32, one p2sh, and one legacy. In which case, they could freely choose their preferred address.
I will take this as the best one.
Also, Electrum for privacy and security. Good thing is you can keep on creating an address and you will not be traced easily. I bet that is what you want to happen right?