This page lists from south to north the significant 'summits' (some are not true summits) of the Organ Mountains. The progress I've made toward conquering them all is indicated by the font color. Most of the peaks are labeled in the below photo, but others are only visible from another perspective such as from the east.
Organ Peak (8872 ft): Signing this summit register required a fairly brutal 10+ hour round-trip hike. Follows Fillmore Canyon most of the way.
Organ Pass Station (8552 ft): This is an abandoned observatory on a mini-summit between Organ Peak and Sugarloaf. I had the choice to check it out, but opted for Organ Peak instead and couldn't do both in one day.
Squaw Mountain (6830 ft): It took ~45 minutes to run up this little mountain, which is to the left as you walk into Soledad Canyon.
Baldy Peak (8445 ft): The hike was somewhat interesting, but the summit was terrible (lack of shade + swarming insects). Should take ~7 hours if you don't foolishly try to descend off the east side toward Organ Peak.
Shark's Tooth (7968 ft): Don't read into the linked description too much... this is a super easy, fun hike to the summit of the mountain ahead to the right as you walk into Soledad Canyon. The round trip hike was roughly 4 hours, including about an hour on top. The summit is great... no swarming insects that day, and there's a nice Juniper just south of the summit under which one could lay down and take a nap (or something rhyming with nap, since the summit register did contain a roll of toilet paper).
Granite Peak (8482 ft): This is probably a multi-day hike, if starting from the West. I haven't done it, though I would like to.
Sugarloaf (7800 ft): Possibly the best thing in the Organ Mountains. We did 3 pitches of Left Eyebrow (5.7R) and 5ish pitches of the Normal Route (5.6R).
Minerva's Temple: technical-only (5.11).
The Retaining Wall: Several low-5th options exist for getting on top. We rappelled down.
Organ Needle (main peak, 9000 ft): Best car-to-car time = 5.5 hrs. Worst car-to-car time = 10.5 hours (due largely to rain and hail). Detailed instructions for getting to the Organ Needle summit are here.
Buzzard Peak (Organ Needle eastern sub-summit): One can scramble up here directly from the saddle connecting it to the main Organ Needle summit. A long of piece of webbing wrapped around the corner of a block allowed us to aid a 5th class move, but it was very sketchy.
Little Squaretop: Some legitimate scrambling required to reach the summit boulder.
Little Squaretop Massif: Took the 5.6-5.7 route going up a crack on the west face.
Squaretop: Led the fun 5.7 pitch to the top.
S1 Spur: Climbed a 5.6 pitch to reach this tiny summit, and retrieved the orginal summit register which contains entries going back to the 1950s.
S2 Spur: technical-only.
Other spurs?: technical-only.
The Tooth:Have hiked to the summit and climbed two 5.10 routes on the face.
The Wedge's Unnamed Southern Neighbor: technical-only?
The Wedge: technical-only; we took the Normal Route (4th/low-5th). This is probably the best Organ Mtn. summit in terms of spaciousness, and great views in both directions. Unlike Organ Needle though, there is not really a good spot on it for camping. Only one move at the start of actual climbing prevents this from being a pure scramble. However, taller individuals (>>5'8") might have no trouble scrambling up and back down.
Lost Peak: Sometime fall 2015, I 'rediscovered' (most visitors to the area have climbing gear so would ignore the route) the scrambling route going up from the saddle between Lost Peak and Third Peak. I was the next entry in the summit register following the April 25, 2014 entry by Glen Melin, Jon Tylka, and Nathan Fry, who stopped here during their traverse of the Organ Mtn. range. This very exciting knife blade of a summit would probably get a lot more traffic if the non-technical route was public knowledge.
Third Peak: Long hike for a short 5.4 pitch, but worth it for the amazing narrow summit!!!
Dingleberry: the hike definitely involves some bushwacking, but walking out on the west overhanging summit block makes it worth it.
Wildcat: The hardest part about the 3rd class route was getting around a medium-size agave (i.e. a mound of hypodermic needles), just when the scrambling started. Not too bad of a hike though... 6ish hours car-to-car if you take Wolt's Whelt.
Razorback: Along with Brandon Gottung, re-pioneered the old West Ridge route. 5 star classic.
The Spire: technical-only; we took the Normal Route (5.7), and replaced a bolt at the top of the 5.7 layback section. Unfortunately, no summit register existed and we didn't bring a new one along. Someone should put one up there.
Low Horn #6: We took the East Face Mosey route. Solid 5.7.
Low Horn #5: Scrambled all the way to the summit with Kevin Enriquez.
Low Horn #4: We scrambled up the northeast face, then rappelled down.
Low Horn #3: Climbed the north face.
Low Horn #2: Climbed the north face.
Low Horn #1: I approached from the west, starting from the Gertch trail leading away from Topp mine hut, but departing to a whelt just south of the Gertch whelt. From there I scrambled/bushwacked up the gully just south of Gertch's Arch, directly toward Low Horn #4's western side, and then hiked ~north toward Low Horn #1. Easy 3rd class scrambling led to the summit, though I did go to the trouble of switching to climbing shoes and chalking up.
Gertch: Easy to scramble on top.
Rabbit Ears Massif: easy hike to the top... much untapped climbing on the SW side.
South Rabbit Ear (SRE): easy hike + scamble.
Middle Rabbit Ear (MRE): Led the classic 5.7 West Face route.
North Rabbit Ear (NRE): technical-only; in Dec. 2015, Michael Briseno and I took the Davis Route (5.5), which starts from west of the saddle in the gully between NRE and MRE. Although watching the sunset from the summit of NRE is a once in a lifetime experience, it is not recommended for first timers to the summit. Locating and using the rappel anchor in the dark was a bit scary. In late May 2016, I climbed Boyer's Chute (5.4) with Marta and Eugene. This was as fun if not more fun than Davis Route.
Lesser Spire: technical-only (5.4). I led a party of 3 up the Normal Route, i.e. the north face. Bob Cort was correct: it is an impressive summit that is surprisingly easy to climb.
ORP: technical-only; we did the route called "Orgy" (5.6).
The Citadel: technical-only; Marta and I did the West Ridge (5.7) on June 13, 2016.
The CWM: We took the 5.5-5.7 West Face route (difficulty depending on variation choice).
Last Peak: Scambled it with Kevin Enriquez.
Nordspitz: easy hike + a bit of scrambling.
Ingraham's guide to the Organ Mountains
Organ Mountains on Mountain Project
AAJ publication on the Organ Saint traverse
Nathan Fry's account of the Organ Saint traverse
AAJ publication on the giant east side routes