1. Dana Meadows (near Tioga Pass) up Parker Creek, to Alger Lakes, Gem Lake. River Trail to Shadow Lake to Ediza Lake. From Ediza, retrace steps one mile, back then hang a left onto the northbound JMT all the way to Tuolumne Meadows. Very short shuttle back to Dana Meadows. ~56 miles
2. Did your Northern Yosemite trip take you to Benson Lake? If not: Twin Lakes to Peeler Lake to Benson Lake. Side trip to Rodgers Lake. PCT to Smedberg Lake. Leave PCT to go up Matterhorn Canyon, then over Burro Pass & Mule Pass back to Twin Lakes. ~48 miles
3. Onion Valley over Kearsarge Pass to Kearsarge Lakes. Southbound on the PCT. Exit over Mt. Whitney to Whitney Portal. Not sure of mileage, estimate 50 mi.
In the eastside terrain, it is really hard to organize a true "loop." The really good trips are going to be point-to-point. I find that shuttles are really easy to do, with a little advance planning. Usually I leave my car at the exit point, and then hitchhike or take a paid shuttle service or take a public bus to my starting point, so that I am traveling clean instead of worn-out and dirty.