I would recommend Arch based distros if not vanilla Arch. Use EndeavourOS or manjaro. As for Desktop Environment in terms of fimilar UX/UI, KDE is your best choice but it will require heavy customization but in the end it would be worth it. If you prefer something aesthetically pleasing out of the box, then go for Deepin (but last time I checked it was little buggy in other OSes).
Also, I would recommend PopOS over Ubuntu.
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I would recommend Arch based distros if not vanilla Arch. Use EndeavourOS or manjaro. As for Desktop Environment in terms of fimilar UX/UI, KDE is your best choice but it will require heavy customization but in the end it would be worth it. If you prefer something aesthetically pleasing out of the box, then go for Deepin (but last time I checked it was little buggy in other OSes).
Also, I would recommend PopOS over Ubuntu.