Shutdown and power off at the wall socket.
Though I do have CCTV cameras and a QNAP running these days. Oh and now the OLED TV is left in standby as it's supposed to run a screen burn routine after a certain number of viewing hours.
So what used to be a maximum power saving effort isn't so important.
Shut down every time.
With NVME Gen4 storage these days, booting up from cold is less than 20 seconds to windows splash screen, from off.
Hella dumb to be leaving a PC on when its doing absolutely nothing especially given the upcoming fuel price hikes.
Never, three desktop PC's here have run continuously for over a year or so, only being shutdown if there's a problem. Greta eat your heart out.... Several Raspberry Pi's run 24 hours a day, seven days a week,too. Having said that I am looking at a quarterly bill here of over £1100, so there is a downside.