Oh, I see what you're asking now. Yes, notifications show up on the lock screen, and by holding the icon, I can read or delete them without unlocking the phone.
However, I think this depends upon the model of phone. Mine is a Moto G6. Unfortunately, I can't grab a screenshot of it for you.
Lock screen, right: I'm losing WP literacy as I try to learn angroid. Thanks, this merits a try. I'm going to launch it on my V20 and see how it feels.