  We investigate the full doping and strain-dependent phase diagram of the
normal state of magic-angle twisted bilayer graphene (TBG). Using comprehensive
Hartree-Fock calculations, we show that at temperatures where superconductivity
is absent the global phase structure can be understood based on the competition
and coexistence between three types of intertwined orders: a fully symmetric
phase, spatially uniform flavor-symmetry-breaking states, and an incommensurate
Kekul\'e spiral (IKS) order. For small strain, the IKS phase, recently proposed
as a candidate order at all non-zero integer fillings of the moir\'e unit cell,
is found to be ubiquitous for non-integer doping as well. We demonstrate that
the corresponding electronic compressibility and Fermi surface structure are
consistent with the 'cascade' physics and Landau fans observed experimentally.
This suggests a unified picture of the phase diagram of TBG in terms of IKS
order.
