Lightroom CC is not as good as real Lightroom at filtering - just keywords, cameras, locations. While it may improve and add some extra fields, it is unlikely that it ever will be a match.
Where it is better is in applying AI to searching for untagged images, if you are online.
AI is fine if I want to search for photos of trees
But if I want a histogram of what focal lengths on which lenses I use the most, metadata searching is the only way
Or if I want to apply noise reduction to images between ISO 20000 and 25000 in one shot; and then 25000 to 30000 in one shot... metadata filtering is the only way
Sure, I understand. One would expect that those fields may eventually be added to LRCC - they are more likely than some other fields - but maybe Adobe think the target market doesn't need them? LR Classic lets you filter on both those fields and many more, so that's where you probably need to be. No point migrating to LRCC until or if it meets your needs....