It's possible to migrate Photoshop Elements Organizer information using Lightroom Classic CC, but that feature isn't part of Lightroom CC at this time. Lightroom CC is only version 1.1. You will have to wait and see what develops in the future as the program matures.
Thanks for the response, it is disappointing that feature wasn't included from the beginning. Do you have any recommendations for importing pictures manually from an elements organizer? I would like to start working in lightroom soon. Would it be worthwhile to ditch my keywords and the like in the organizer in favor of lightroom's built-in machine learning tagging features?
Either that, or add your own keywords in Lightroom CC. It's your choice. Remember, Lightroom CC is a new program in its infancy. I'm just a user like yourself, and I really don't use Lightroom CC that much. I prefer Lightroom Classic CC. I watch Lightroom CC and use it a little bit to see how it develops, but I haven't committed to it and don't plan to.
Would it be worthwhile to ditch my keywords and the like in the organizer in favor of lightroom's built-in machine learning tagging features?
The Adobe Sensei keywords are additional to your own. I would not sacrifice them.
Try writing metadata in Organizer
Select all (Ctrl+A or Cmd+A) and go to:
File >> Save Metadata to Files
Then add photos to LrCC
You would lose albums, version sets, stacks etc. but at least your keywords will be saved.