Variants of Kinetically Modified Non-Minimal Higgs Inflation in
  Supergravity
  We consider models of chaotic inflation driven by the real parts of a
conjugate pair of Higgs superfields involved in the spontaneous breaking of a
grand unification symmetry at a scale assuming its Supersymmetric value.
Employing Kaehler potentials with a prominent shift-symmetric part proportional
to c- and a tiny violation, proportional to c+, included in a logarithm we show
that the inflationary observables provide an excellent match to the recent
Planck and Bicep2/Keck Array results setting, e.g., 0.0064<= c+/c-<1/N where
N=2 or 3 is the prefactor of the logarithm. Deviations of these prefactors from
their integer values above are also explored and a region where hilltop
inflation occurs is localized. Moreover, we analyze two distinct possible
stabilization mechanisms for the non-inflaton accompanying superfield, one tied
to higher order terms and one with just quadratic terms within the argument of
a logarithm with positive prefactor Ns<6. In all cases, inflation can be
attained for subplanckian inflaton values with the corresponding effective
theories retaining the perturbative unitarity up to the Planck scale.
