  In this paper, we extend the treatment of asymptotically decelerating
spatially flat FLRW spacetimes initiated in [1]. We show that a certain class
of those metrics is ruled by the asymptotic algebra
$\mathfrak{b}\mathfrak{m}\mathfrak{s}_s$, which belongs to a one-parameter
family of deformations of $\mathfrak{b}\mathfrak{m}\mathfrak{s}$. Furthermore,
we enlarge our ansatz to include $\text{Diff}(S^2)$ transformations whose
asymptotic algebra $\mathfrak{g}\mathfrak{b}\mathfrak{m}\mathfrak{s}_s$ is a
one parameter deformation of
$\mathfrak{g}\mathfrak{b}\mathfrak{m}\mathfrak{s}$. Therefore, the holographic
algebras $\mathfrak{b}\mathfrak{m}\mathfrak{s}_s$ and
$\mathfrak{g}\mathfrak{b}\mathfrak{m}\mathfrak{s}_s$ in FLRW can be related to
their flat counterparts through a cosmological holographic flow. Finally, we
introduce a logarithmic ansatz in order to account for cosmological black
holes, which does not generally satisfy the peeling property but preserves the
asymptotic algebra.
