I'm newer to backpack hunting and my list looked similar to yours in the beginning; too much stuff
Rain cover never got used even in rain and nothing got soaked, ditched
I like a bladder, use the Sawyer with adapter to fill bladder, bring tabs as back up. The Steri pen is one more thing to charge, ditch it.
Sleep system is heavy but if its all you have, not much you can do.
A ton of clothes. When moving around even 25 degrees isn't that cold. That is all individual of course. Ditch the extra socks, underwear, multiple gloves, puffy pants.
Battery pack, a 10000 mah will take care of everything if you stay in airplane mode and keep screen time to min time and brightness. I do like an extra headlamp. What's with all the chargers?
2-3 mini Bics, ditch the flint. I use some of those burn tabs from a military surplus for emergencies. Cannot recall their name.
Toothbrush, paste, deod, soap, ditch them all. I use wet wipes as needed or plain water. Put on a bunch of deod before leaving. I bring a small golf towel, it's in between a wash cloth and hand towel, synthetic and very light. I can soak it in water and wipe down, cool off, etc. It has a grommet with a small carabiner I hang on the pack to dry out.
Keep the wipes wet. I use paper towels as well. More durable, less blow throughs to deal with.
Survey tape, sunglasses, optics cleaner, hot hands, toe warmers, electric tape, all ditch. Keep some duct tape wrapped on your trekking pole.
Food, like others said, mix it up. I tired the "I can eat the same thing for 7 days" deal. It sucked, day three I didn't want any of it.
Fishing gear, spotter, tripod, all subjective. I'm willing to kill anything legal so a spotter isn't needed for me.
I like a small blow up pillow, it really helps me sleep. Extra release for sure, maybe a few tools to fix bow if needed. I bring a small empty water bottle to use for Mio water flavoring.
Like I said, nowhere near the experienced guys on here but, have been able to pare' down my pack after a few years. Good luck!