how to prevent input focus for a single window in gnome-shell window manager?

I need a single window to be on top and never gain focus when any other window is closed. In this case it is a gnome-terminal window w/o decorations, where I am running nethogs, it has a single text line in height. But when I close yakuake that gnome-terminal always get focus and messes my work flow (the browser, or netbeans or geany should receive focus but that ontop terminal always receive it). I get the window id $nWID with xwininfo, and try all these commands but nothing works:

xprop -set WM_TAKE_FOCUS false -id $nWID
xprop -remove WM_TAKE_FOCUS -id $nWID
xprop -remove WM_PROTOCOLS -id $nWID
wmctrl -i -r $nWID -b add,skip_pager
wmctrl -i -r $nWID -b add,skip_taskbar
xprop -id $nWID -format WM_HINTS 32cbcxxiixx -set WM_HINTS 3,False,1,0x0,0x0,0,0,0x0,0x0

to remove decorations, I use this: https://gist.github.com/muktupavels/d03bb14ea6042b779df89b4c87df975d could the only way to do that, may be... to tweak the above code to add such functionality? related: https://stackoverflow.com/q/56559726/5648245