Most of the screenshots are here: https://imgur.com/a/cHKyLCn, I still have to add the last five (Dracula and Zenburn).

If you want to see any of these themes I can try to make them for mIRC: https://tmtheme-editor.herokuapp.com/

I may also add these ones next: https://github.com/ayu-theme/ayu-colors#colors

Added Dracula theme from the original palettes https://draculatheme.com/:

Just a reminder, the HexChat schemes are "temporary", only the palettes and their color order were imported, I don't have much time to play with them at the moment and HexChat seems to have 16 colors + background (please correct me if I'm wrong here) which makes mIRC hard to copy the same themes.

Not sure I modified anything else but Tempesta and Tempesta2 background is 2 points lower again, now 24,24,24 (identical to the Zenburn Darker themes), more readable this way.