Rich, post away. The OP gave a nice clarification.
Noseoil, thanks for the clarification. Here are some of mine. All used on 2x3, most cover more. I have lenses that I see as relative clinkers or just too hard to use, no need to mention them. Also a couple that are really pretty specialized. Ones in italics usually stay home. All bought because good value for money.
38/4.5 Biogon in Copal 0 (great lens, covers 84 mm)
1.75"/2.8 Elcan (not a good lens, barely covers 6x6)
47/5.6 SA in Prontor 00(single-coated, a keeper)
58/5.6 Grandagon in Synchro Compur 00(separated, jury's still out)
65/8 Ilex in Compur 00(a keeper)
80/6.3 WF Ektar in Supermatic(another keeper)
95/2.8 Saphir in Prontor Press(jury's out, shutter has to be scaled for it)
100/6.3 Neupolar (superb macro lens, hard to use)
101/4.5 Ektar in Supermatic(a keeper, the gold standard)
4"/2.0 Taylor Hobson (a keeper, the platinum standard, but heavy)
105/3.7 Ektar in Supermatic(last one wasn't a keeper, this one's untried, shutter needs CLA)
105/4.5 Comparon in #0 (macro only, still on trial)
105/5.6 El Nikkor (macro only, easier to use with flash than the Comparon or Neupolar, still on trial)
105/5.6 Zircon in Copal 1(jury's out)
120/7.7 Uno (a little soft, usable)
127/4.7 Tominon in Copal 1(surprisingly good)
130/6.3 CZJ Tessar in Compound(fine lens, 1911-2, shutter needs an overhaul)
135/5.6 Symmar in Synchro Compur(convertible, better than usable)
135/10 Apo Saphir (keeper, I really shouldn't carry it and the Symmar)
150/5.6 Zircon in Copal 1(on trial)
150/6.3 CZJ Tessar (1911-2, super lens)
150/8 Apo Ronar (keeper)
160/5.6 Pro Raptar in Rapax(very good lens, shutter needs service)
180/6.3 Saphir on Synchro Compur(recently arrived, shutter needs service)
180/10 Apo Saphir (keeper)
210/5.6 Zircon (ugly, shoots very well, too heavy)
210/6.8 Beryl (good)
210/7.7 Beryl S (better, contrastier than GRII)
210/9 Konica Hexanon GRII (sharpest 210, but can flare)
240/10 Apo Saphir (keeper, bought just because)
10.16"/9 Taylor Hobson Copying Lens (very good indeed, tiny)
260/10 Nikkor-Q (Process Nikkor, really, too too big)
300/10 Cooke Apotal (fine lens)
300/10 Apo Saphir (also fine, not quite as good wide open as the 305 AN)
12"/4 Taylor Hobson Telephoto (good, bellows vignettes it at infinity)
305/9 Apo Nikkor (super lens)
360/10 Apo Saphir (also super)
420/9 Apo Nikkor (ugly, shoots very well)
450/10 RF-5 (not needed, really)
480/9 Apo Nikkor (another super lens)
Having gone to the trouble of making a tandem camera to be able to use my longer lenses, I find that the longest I routinely use is the 360.
Specialists, not for general use, all stay home:
25/2.8 Summar (ex-YELUU, best above 10:1)
25/3.5 Luminar
40/4.5 Luminar
50/3.5 Neupolar (MicroNikkor is better)
55/2.8 MicroNikkor AIS (super reversed @ f/4 above 2:1 on 2x3)
63/4.5 Luminar (poor cosmetics, good glass)