It wouldn’t be a bad idea for someone to create an engine to translate Lightroom (or CaptureOne) presets to DxO. I don’t have much use for presets as they are so easy to build in PhotoLab in comparison to those two and are very easy to create oneself. Spend some time with the Preset builder if you’d like to speed up your workflow and increase the quality of your output photos at the same time. For each event type project, one can build and improve a preset or a set of presets as one works.
The other answer is that there is support for ICC and DCP profiles (used in Lightroom) in PhotoLab. You can even grab the ones which Adobe Camera Raw installs and experiment with them.
My favorite rendering for my Canon 5DS R images is under the Camera Body category - “Leica M-E, M9, M9P, M10” as I like the extra colour and contrast it adds (which I often dial back, but I like it better as a starting point). I went through dozens of camera renderings to choose that one. The Nikon D850 and Canon 1DS II were the other two which worked well for me.
What is missing in PhotoLab2 which would lighten the burden of incompatibility with Lightroom presets is the ability to apply external LUTs to images. LUTs were promised in December 2018. This is a bad choice of promise for DxO to break as LUTs are a modern standard now.