  Under the basis light-front quantization framework, we investigate the
leading-twist transverse-momentum-dependent parton distribution functions
(TMDs) for $\Lambda$ and $\Lambda_c$ baryons, the spin-1/2 composite systems
consisting of two light quarks ($u$ and $d$) and a $s/c$ quark. We evaluate the
TMDs using the overlaps of the light-front wave functions in the leading Fock
sector, which are obtained by solving the light-front eigenvalue equation. We
also study the spin densities of quarks in momentum space for various
polarizations. In the same model, we compare the TMDs of the strange and
charmed baryons and the proton by reviewing their spin structures in the quark
model and the probabilistic interpretations of their TMDs.
