Telegram has a Secret Chat. It's on the 3 dots menu in the screen for a contact. Secret chats are available only on one device, they don't sync to the other devices of the user.

And? WhatsApp is e2ee-but-sends-your-data-brazenly-to-google-and-facebook-by-sidechannels.

So far Telegram hasn't been caught once the last decade while WhatsApp has been caught at least twicem