  We follow up on a suggestion by Adams and construct explicit domain wall
fermion operators with staggered kernels. We compare different domain wall
formulations, namely the standard construction as well as Borici's modified and
Chiu's optimal construction, utilizing both Wilson and staggered kernels. In
the process, we generalize the staggered kernels to arbitrary even dimensions
and introduce both truncated and optimal staggered domain wall fermions. Some
numerical investigations are carried out in the (1+1)-dimensional setting of
the Schwinger model, where we explore spectral properties of the bulk,
effective and overlap Dirac operators in the free-field case, on quenched
thermalized gauge configurations and on smooth topological configurations. We
compare different formulations using the effective mass, deviations from
normality and violations of the Ginsparg-Wilson relation as measures of
chirality.
