  In this paper, we have looked at various variants of the clockwork model and
studied their impact on the neutrino masses. Some of the generalizations such
as generalized CW and next-to-nearest neighbour interaction CW have already
been explored by a few authors. In this study, we studied non-local CW for the
fermionic case and found that non-local models relax the $\left| q \right| > 1$
constraint to produce localization of the zero mode. We also made a comparison
among them and have shown that for some parameter ranges, non-local variants of
CW are more efficient than ordinary CW in generating the hierarchy required for
the $\nu$ mass scale. Finally, phenomenological constraints from $BR(\mu
\rightarrow e \gamma )$ FCNC process and Higgs decay width have been imposed on
the parameter space in non-local and both-sided clockwork models. We have
listed benchmark points which are surviving current experimental bounds from
MEG and are within the reach of the upcoming MEG-II experiment.
