Xenoblade X and Xenoblade 2 are very very different in what they try to accomplish. If it weren't for the Xenoblade in their names no one would really think they belong in the same series. So you can play them in whatever order you want. Anyway since this about Xenoblade 2.
I loved the game. I have played a good amount of JRPGs. I like the 2nd Xenoblade more than the 1st one. Honestly seeing that you are a big Persona 5 fan (Assuming). You have a much greater chance of liking it than most people. It is a must-have if you love JRPGs. When I played it I thought I was playing a modern SNES era JRPG honestly. Only the story was told in cutscenes, not in text.
Anyway, it is my 2nd favorite Switch game after Zelda. I also recommend finishing Xenoblade 1 for reasons you will understand when you beat both games.