Yesterday night, I tried the live ISO of Peppermint 7. https://peppermintos.com/ Version 7 was released on june 24. Based on Ubuntu 16.04, it's kind of hybrid distro. It was based on LXDE before, but now uses the XFCE panel and whiskermenu. The file manager is (Cinnamon's) Nemo, the default text editor is (MATE's) Pluma. I may be wrong but I think the guy who started Peppermint was on the Mint team before. I think it's meant to be using live apps but you can install LibreOffice or else if you want. I'm not a big fan of the default theme, but it can changed of course. Interesting nevertheless, it feels light and snappy.