  The classification of point gap topology in all local non-Hermitian symmetry
classes has been recently established. However, many entries in the resulting
periodic table have only been discussed in a formal setting and still lack a
physical interpretation in terms of their bulk-boundary correspondence. Here,
we derive the edge signatures of all two-dimensional phases with intrinsic
point gap topology. While in one dimension point gap topology invariably leads
to the non-Hermitian skin effect, non-Hermitian boundary physics is
significantly richer in two dimensions. We find two broad classes of
non-Hermitian edge states: (1) Infernal points, where a skin effect occurs only
at a single edge momentum, while all other edge momenta are devoid of edge
states. Under semi-infinite boundary conditions, the point gap thereby closes
completely, but only at a single edge momentum. (2) Non-Hermitian exceptional
point dispersions, where edge states persist at all edge momenta and furnish an
anomalous number of symmetry-protected exceptional points. Surprisingly, the
latter class of systems allows for a finite, non-extensive number of edge
states with a well defined dispersion along all generic edge terminations.
Instead, the point gap only closes along the real and imaginary eigenvalue
axes, realizing a novel form of non-Hermitian spectral flow.
