I love everything about the old Lenovo ThinkPads (≤ 2013). These machines are highly customizable compared to the latest ultrabook laptops. I use a T530, X230, and an X230 Tablet. And all of these laptops are capable of running macOS Catalina also.
I highly recommend old Lenovo ThinkPads if you’re on a budget. Plus recycling can benefit your community and the environment. It’s a sustainable approach.