Hello,
Atomic Wallet Overview:
It could be a PC application. The drawback if your PC has a lot of applications, it will take additionnal memory so going to online wallets instead.
It could be helpful to receive a lot of crypto not found on other 2 wallets. Like for example TON COIN native is available on Atomic Wallet and not available in Komodo Wallet (they only receive BSC and ERC20).
Komodo Wallet:
I first discovered when trying to convert LBC from Odysee but I discovered it could be helpful for example to receive multiple cryptocurrency. The time of swap requires miner fee and a lot of time. (Arround 14 min to swap BCH to Polygon). However, it could replace Atomic Wallet for send exact amount of money.
Bitget Wallet:
If you are going to pay with Coinbase Merchant, then Bitget is for you. There is a small head ache when swaping from Polygon to pay because they set default to ERC 20. However, it is not possible to receive BCH.