If you interested in great feeling and great IQ lenses with a small foot print look not further than the Zeiss Loxia line, Sony 24mm F2.8G / 40mm F2.5G and 50mm F2.5G, the new Sigma Contemporary lens line for both E and L mount and Voigtländer lenses for both E and M mount. All of them have metal bodies and some of these are even weather sealed and have AF.

There is some Chinese lenses as well which seem to be very well built.

Great lens resources: https://phillipreeve.net/ https://dustinabbott.net/ and https://www.fredmiranda.com/