canon FDn 200mm f4. Sometimes it can flare, but other than that, it's extremely good. $60
Olympus 200 f5, even a little smaller, but contrast and color not on the level of the canon (canon has better coatings). $60
voigtlander 10/12/15 are smallish, but kind of heavy. 3-400 grams if I had to guess.
OM 24, fairly small, even adapted. Optics are pretty strong, but contrast not as good as modern lenses. Got mine for $60 but typically go for more.
voigtlander 12mm vii is pretty darn small and light, but not as strong as newer versions.
canon FDn 135mm f2.8, nice lens, not too big, similar to the 200 in optics, maybe not as strong wide open.
Sony A7rii/A7riii - FE 12-24/4 - FE 24-240 - FE 28/2 - FE 35/2.8 - SY 35/1.4 AF - FE 50/1.8 - FE 85/1.8 - EF 135/1.8 Art - F 600/5.6 - CZ 35-70, 100-300 - Astro Rok 14/2.8, 24/1.4 - Tamron 28-75/2.8 RXD, 70-200/2.8 VC