  Charm-hadrons possess versatile hadro-chemistry as characterized by various
transverse-momentum-dependent ratios between their different species. In
particular, the charm hadro-chemistry may be modified in relativistic heavy-ion
collisions with respect to proton-proton collisions at the same energy, as
caused by novel diffusion and hadronization mechanisms of charm quarks in the
environment of the created quark-gluon plasma (QGP) in the former. Inspired by
recent measurements of leptons from charm-hadron decays (separated from bottom
decays) in Pb-Pb and Au-Au collisions, we investigate the effects of the charm
hadro-chemistry on the leptonic observables. We find that full consideration of
charm hadro-chemistry in both proton-proton and heavy-ion collisions causes
only mild change of charm-leptons' suppression factor with respect to previous
calculations hadronizing charm quarks into $D$ mesons only, whereas the
resulting change (increase) in the charm-leptons' elliptic flow turns out to be
more pronounced as a consequence of the larger collectivity of $\Lambda_c$
baryons than $D$ mesons.
