Cosmological constraints from HII starburst galaxy, quasar angular size,
  and other measurements
  We compare the constraints from two (2019 and 2021) compilations of HII
starburst galaxy (HIIG) data and test the model-independence of quasar angular
size (QSO) data using six spatially flat and non-flat cosmological models. We
find that the new 2021 compilation of HIIG data generally provides tighter
constraints and prefers lower values of cosmological parameters than those from
the 2019 HIIG data. QSO data by themselves give relatively model-independent
constraints on the characteristic linear size, $l_{\rm m}$, of the QSOs within
the sample. We also use Hubble parameter ($H(z)$), baryon acoustic oscillation
(BAO), Pantheon Type Ia supernova (SN Ia) apparent magnitude (SN-Pantheon), and
DES-3yr binned SN Ia apparent magnitude (SN-DES) measurements to perform joint
analyses with HIIG and QSO angular size data, since their constraints are not
mutually inconsistent within the six cosmological models we study. A joint
analysis of $H(z)$, BAO, SN-Pantheon, SN-DES, QSO, and the newest compilation
of HIIG data provides almost model-independent summary estimates of the Hubble
constant, $H_0=69.7\pm1.2\ \rm{km \ s^{-1} \ Mpc^{-1}}$, the non-relativistic
matter density parameter, $\Omega_{\rm m_0}=0.293\pm0.021$, and $l_{\rm
m}=10.93\pm0.25$ pc.
