The chipset in the laptop you mentioned is a HM570. It does not have Rapid Start Technology support. The last Chipsets to support IRST were the 9 Series chipsets of the Broadwell Generation CPUs (5th Generation Core i3/i5/i7) which were released in 2014.
s0 hibernate doesn’t seem to be available on linux. And s3 sleep consumes too much power for me (4% power consumption for half an hour). I’m using s4 hibernate now. But it recovers slowly.
I use macos at work and its sleep is very power efficient and resumes very fast. It is a pity that this technology cannot be used under linux.
Power consumption and available modes depend on hardware and it’s support. For macos it’s super easy since they design both software and hardware. In most other cases soft has to workaround some issues caused by hardware manufacturers.
It depends on disk speed, amount of used ram and kernel settings.
8% per hour is quite high, check out UEFI settings (sleep, WoL, always on USB ports, crap like Intel Smart Connect etc.) and look through dmesg and journalctl, maybe something needs tweaking. Start new topic, anyway.