Newish user migrating to Linux

I have been using Arch Linux with i3wm for around 5 years for work, on my ThinkPad. I am fairly comfortable with pacman and setting up a distro. I have previously tried Mint, Manjaro, KDE Neon, Elementary, and MX Linux, all for the same use case (Work: where I need a browser, Slack, and a MongoDB GUI)....