Because I live in the UK, where earth pins are compulsory & all building wiring is earthed, I've always gone for comprehensive grounding/earthing of all components & all signal paths.
I terminate any structure at a single socket or single phase node of a common ring, if at all possible.
If I am ever faced with potential ground loops because, for instance, another part of the installation may be remote from me - a PA handled by a separate company, wired off potentially another phase or ring, then I have my "secret weapon", which I acquired from the BBC over 3 decades ago when I worked there.
It goes by the unsalubrious moniker of a "buggery box". No doubt it did at one time have an official name, but that is apparently lost to the mists of time & they've been called that since BBC engineers wore brown lab coats.
Essentially, it is a 1:1 isolating transformer inside a steel case you couldn't damage with a sledgehammer. I'm not sure what else is in there other than about 10 kg of very heavy copper winding.
Plug your own stage rig into that - no ground loops, no chance of getting electrocuted.
Back in the old clockwork analog days, the BBC used to put one of these on every single piece of equipment on an outside broadcast & also had similar devices for any sonic connections too, 1:1 XLR & bantam jacks in effect, so that no piece of their equipment was ever connected directly to anyone else's.
I always reckoned if it was good enough for Auntie Beeb, it was good enough for me.
Isolation transformers block transmission of the DC component in
signals from one circuit to the other, but allow AC components in
signals to pass. Transformers that have a ratio of 1 to 1 between the
primary and secondary windings are often used to protect secondary
circuits and individuals from electrical shocks between energized
conductors and earth ground. Suitably designed isolation transformers
block interference caused by ground loops. Isolation transformers with
electrostatic shields are used for power supplies for sensitive
equipment such as computers, medical devices, or laboratory