Will share found JWM theme:
Zsh is good choice!
Which of stacking WM the fastest?
Out of what we covered, you should try JWM and Fluxbox.
Is it possible create my own desklets, customise menu with tint2?
Share others variants) !
This is mine.
WM: Hyprland
Bar + notifications: Ignis (compatible with Niri and Hyprland)
Rest of the stuff: https://github.com/bitterhalt/dotfiles
So gnome looks like just WM, not desktop environment
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Standalone WM’s can be customised to look however you want.
Just as any other DE. There’s really no rule for that.
Please, see JWM: how set choose theme?
what else?
What else? 
Nespresso ?
It Is WM theme?
It’s a coffee machine. Their advertising slogan is “Nespresso, what else?” It’s a good name for a theme though.
wallpaper available for me?