MillenniumTNG

This picture (from LGalaxiesPublicRelease.github.io) is iconic.

MillenniumTNG is cosmological magnetohydrodynamical simulations of galaxy formation, which is the upgrade of IllustrisTNG combined with Millennium.

In Sec. 3.3 of [2304.12338] The MillenniumTNG Project: The impact of baryons and massive neutrinos on high-resolution weak gravitational lensing convergence maps, the simulation of massive neutrino is explained. This is the first time that neutrino is introduced to the simulation.