But I found Media Player Indicator has been retired and gnome-overview-conf link does not provide the extension link to install it and it cannot be found, at least with that name in gnome extensions.

I also would add,
– GSConnect (KDE Connect for Gnome shell)
– Frippery panel favorites – to make the bar act also as dock –
– Hide top bar – to earn desktop space in full screen/window modes-
– Sound Input & output Device chooser – +50% volume, and fast select –
– Arc menu – alternative menu –

But those are personal choices.