If I open the keywords pane, I get an area with a window to enter keywords. There is no available list of existing keywords there to select from. Classic would give me a list that I could select from, allowing me to add multiple keywords in just a few clicks. Is this not available in cloud-based?
The Keywording panel you describe is currently only available in Lightroom Classic. You can submit a feature request for this in Lightroom Desktop or, if you like, I can convert this post for you.