While I'm no expert, I have been going to the Sierra Nevada, both west entry and east entry for decades. On the east side you have the Chimney Peaks rec area with a lot of Pinion/Juniper camping with a few very primitive campgrounds. You can get there circuitously by driving in from Hwy 58 south of Tehachapi roughly following the PCT's route. I've been all around Rockhouse Basin (now closed to motors) and the primitive road into Monache Meadows. No services or structures of any kind when you arrive and has the so. fork of the Kern River flowing through it. My bro wants to have a mt. bike reunion there. Many trails. I was first there in my '66 Gland Bruiser in 1968. Maybe not this year but best to go in after mid-June to escape the mud. For a short trip to 10K feet on the east flank, go up the Cottonwood Lakes Roadend road and TC at the equestrian area. This is a cool respite in the heat of summer and is usually deserted. Of course west of Conway Summit has some cool camping up high and two tracked. Sonora Pass and vicinity are great summer camps.
On the west there is a lot of good camping around Huntington Lake. We have camped right at Kaiser Pass before. Turn R on a dirt jeep trail when you get close to the summit. I've heard you can use your truck camper near Lk. Edison but not other larger type RV's. The road in is very curvaceous with hairpin turns at 5 mph and steep. Around Swamp Lk. is some great camping (and Jeeping). The entrance to the Dusy/Ershim Jeep Trail has some beautiful landscape and not hard to get to. You've been all around Sequoia already.
Closer to L.A. we've been up Apache Cyn near Pinion Mountain (mt. pinos) for some lonesome, sandy, out of the way exploring.
At the beginning of spring and end of summer, Papoose Flat in the Inyos is an engaging higher altitude camping area. You will need 4WD for the sand, but it has huge sandstone formations that are warm and inviting, kind of like Canyonlands.
Off the top of my head, that's my list.
regards, as always, jefe
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