Fedora with XFCE on a Thinkpad T14, which has official fedora-support.

We develop our own php-based CRM and host on redhat-based OS’s so having a similar local environment helps.

The jetbrains-IDE’s work flawlessly on Linux here and I think they cover almost all languages by now.

There’s no guidance on the DE in our company, I simply preferred XFCE when I installed my system. I think I’ll be trying out KDE on my next system.

Except it only keeps cookies separated, history is shared over all containers.