For me, minor shift in two items up to the "most critical" list.

As a hiker (including Sierras), my essentials closely mimic yours, but personal preference/priorities have signal mirror and whistle included in first "critical" list. Maybe ahead of extra clothing, depending on weather, time of year, conditions, hike location etc.

In event of impaired mobility caused by mishap -- say broken leg or worse -- and maybe where fuel for signal fire not abundant, I absolutely want to have signaling basics well-covered.

And for where I might typically be hiking, fishing kit would be higher importance.