Two features have mostly vanished from the iPhone line: Touch ID and the headphone jack. The iPhone SE is the only current iPhone with a physical Home button and Touch ID scanner. All non-SE models from the 2017-era iPhone X and up rely on Apple's Face ID as your main security point. If Touch ID is your thing, your options are the iPhone SE or a used iPhone 8. The last iPhone with a headphone jack was the 2015-era iPhone 6s, meaning that ship has long since sailed. You should have already given in and picked up wireless earbuds or an adapter for your Lightning port.