Creeker

I know I identified this one for you recently, so I will give you the field marks. The black head/breast is variable on the females if that's whats giving you pause. Females also have undersides that can be just a shade duller than the males bright lemon yellow. Top it off with the dark wings. There really are no other Icterids in Southern California that look like this.

Looks like Common to me too, with those grayish undersides.

Did a little further digging on Mt. Pinos. Apparently Cassin's and Purple are both there in decent numbers in June, which is when I believe the OP went there.

Odds strongly in favor of Purple, especially this time of year.

I've got top two Anna's and bottom one Costa's ( dumpy posture, wingtip to tail, white collar. )

With that eye ring, yellow throat and undertail, and gray head, I'm thinking Nashville Warbler.

Your Oriole looks good for Scott's ( uncommon so nice find! ) and your hummer looks good for Costa's, with that dumpy posture, white collar, wingtip to tail ratio, and slightly downcurved bill.

Looks pretty normal for a Black-chinned to me. Just maybe the lighting is washing it out a little

I've been bit, scratched, clawed, and punctured by many species of birds. Mostly Raptors, but some water birds as well. The worst thing that happened was a simple infection. Usually nothing happens.

I wonder where he's going. I need some good fishing spots in Yosemite valley. 😎

Might be someone's escaped falconry bird with that trans pac.

Fyi....Towhees are smaller than American Robins.

I see Mountain Chickadees here fairly often ( mountains east of San Diego. ) This is exactly what Mountain Chickadees look like ( with that weak eyebrow ) when I see them here in summer. I don't think you have any hybrids there.

Yah, I guess I should place structure over plumage. 🤔

I must add that the short straight bill bothers me for Black-chinned, as does the little bit of a white line from the chin to the eye. But not enough for me to say Broad-tailed. I sure wish that gorget was in the right light!