Lenovo is much better than Dell and has announced a lot of Ryzen 5xxx laptops. Not sure if the Thinkbooks/Thinkpads are available yet but they are coming.

AMD just caught up (to Intel) in 2020 in laptop efficiency, and the OEMs are starting to catch up in offerings in 2021. However, availability is a mess in general lately. Might be 2022 before really high-end laptops offer Ryzen regularly.