I’m running Catalina as well on both my work and personal Macs. Both are MacBook Pro, 15".
My work computer is either 2017 or 2018. It has the butterfly keyboard, which I genuinely dislike using, and the Touch Bar, which I also genuinely dislike but haven’t given it a fair shot, either. The first thing I did was to turn the Touch Bar back into function keys. Well, a “function bar”, I suppose is what it is now.
I do love the monitor, and it’s really thin and lite machine, and overall it is a very nice computer.
My personal computer is a 2015 MacBook Pro. It’s bulkier and heavier, but the keyboard is a joy to type on. When at a desk I usually tether to a dock and use an external monitor & keyboard, so that does relieve me from the butterfly keyboard.
I, personally, wouldn’t recommend the butterfly keyboard models, if it can at all be avoided.