Differences between Exchange Service Wallet, HD Wallet, and Private Key Wallet?

Exchange Service Wallet: Enter your (Read-only) API Key and Secret Key from an exchange. 

Function: Monitor owned assets.

HD Wallet: You have a 12-word passphrase to manage all private keys. 

Function: Send, Receive, Check Transaction History.

Private Key Wallet: Users import private keys of each cryptocurrency (BTC, ETH, EOS, ADA,…) from different wallets or other services.

Function: Send, Receive, Check Transaction History.