Neutrinos, leptons, and quarks are all elementary particles, but they have different properties and characteristics. It is not accurate to compare them in terms of size because they do not have a defined size in the way macroscopic objects do. Instead, their sizes are described by their interaction cross-sections, which indicate the likelihood of their interactions with other particles.
Neutrinos are the lightest among the three. They are electrically neutral, have very little mass (although not exactly zero), and interact only weakly with other particles, making them extremely elusive. Neutrinos are often referred to as "ghost particles" because they can pass through matter without significant interaction.
Leptons, on the other hand, have a wider range of masses. The leptons include particles such as electrons, muons, and taus, along with their associated neutrinos. Electrons, which are commonly known as the building blocks of matter, have a mass that is approximately 0.0005 atomic mass units (amu). Muons are about 207 times more massive than electrons, and taus are even more massive than muons. However, compared to the mass of the quarks, the leptons are relatively lightweight.
Quarks are the constituents of protons and neutrons, which are the building blocks of atomic nuclei. Quarks have fractional electric charges and come in six flavors: up, down, charm, strange, top, and bottom. The up and down quarks are the lightest, with masses on the order of a few MeV/c^2 (mega-electronvolts divided by the speed of light squared). The charm, strange, top, and bottom quarks are much more massive than the up and down quarks, with the top quark being the heaviest elementary particle known, with a mass of around 173 GeV/c^2 (giga-electronvolts divided by the speed of light squared).
In summary, neutrinos, leptons, and quarks are all elementary particles, but they differ in terms of mass and their interaction properties. Neutrinos are the lightest, while quarks, particularly the top quark, are the heaviest among them.