Hmm, I watched the Oxygen video https://www.youtube.com/watch?v=7yae8GvpPVo where they build a webpage and it doesn't seem weird to me. As a Squarespace user, it seems more familiar to me than the Gutenberg editor. For example, setting the spacing of two side-by-side elements with Gutenberg seemed really strange. They were spaced really far apart without an obvious way to reduce the spacing.
proelements
Interesting! That looks like a completely free version of Elementor Pro. It looks like it's not on the official Wordpress plugins site https://wordpress.org/plugins/search/PRO+Elements/ though. I read that makes it more risky.