It's been a hell of a paradox for me after switching from Windows to Linux that the two types of applications that I missed the most were good text editor (Notepad++) and good ssh connection manager (Moba Xterm).
For me, it's ShareX I miss the most. Flameshot is a good contender, when the Wayland support gets better.
Mobaxterm is great. However it's worth spending a little bit of time putting your hosts into ~/.ssh/config and using short hostname aliases to start your ssh sessions. I had switched to using mobaxterm as just a shell without saved sessions before I switched completely (back) to using Linux. With a properly set up ssh-agent and this config file you probably won't miss mobaxterm.
Not even Kate can replace Notepad++ on Linux for you?