  Standard lore views our 4d quantum vacuum governed by one of the candidate
Standard Models (SMs), while lifting towards some Grand Unification-like
structure (GUT) at higher energy scales. In contrast, in our work, we introduce
an alternative view that the SM arises from various neighbor vacua competition
in a quantum phase diagram. In general, we regard the SM arising near the
gapless quantum criticality (either critical points or critical regions)
between the competing neighbor vacua. In particular, we demonstrate how the
$su(3)\times su(2)\times u(1)$ SM with 16n Weyl fermions arises near the
quantum criticality between the GUT competition of Georgi-Glashow (GG) $su(5)$
and Pati-Salam (PS) $su(4)\times su(2)\times su(2)$. We propose two enveloping
toy models. Model I is a conventional $so(10)$ GUT with a Spin(10) gauge group
plus GUT-Higgs potential inducing various Higgs transitions. Model II modifies
Model I plus a 4d discrete torsion Wess-Zumino-Witten-like term built from
GUT-Higgs field (that matches a nonperturbative global mixed gauge-gravity
anomaly captured by a 5d invertible topological field theory $w_2w_3$), which
manifests a Beyond-Landau-Ginzburg criticality between GG and PS models, with
extra Beyond-the-Standard-Model (BSM) excitations emerging near a quantum
critical region. If the internal symmetries were treated as global symmetries,
we show a gapless 4d deconfined quantum criticality with new BSM fractionalized
fragmentary excitations of Color-Flavor separation, and gauge enhancement
including a Dark Gauge force sector, altogether requiring a double fermionic
Spin structure named DSpin. If the internal symmetries are dynamically gauged,
we show a 4d boundary criticality such that only appropriately gauge enhanced
dynamical GUT gauge fields propagate into an extra-dimensional 5d bulk. The
phenomena may be regarded as SM deformation or morphogenesis.
