  We tested four $f(Q,T)$ models in an extension of symmetric teleparallel
gravity whose Friedmann equations reduce to $\Lambda CDM$ for certain
parameters. Using low-redshift data we found that all our models were 2$\sigma$
consistent with $\Lambda CDM$ and the Hubble constant value were $\sigma$
consistent with the one of the SH0ES collaboration and at $12\sigma$ tension
with the one of the Planck Collaboration. To see whether one of our models can
challenge $\Lambda CDM$ at a background perspective, we computed the Bayesian
evidence for our four models and $\Lambda CDM$. The concordance model was
preferred over all our $f(Q,T)$ alternate models, showing a weak preference
against models $f(Q,T) = -Q/G_N + bT$ and $-(Q+2\Lambda)/G_N + bT$ and a
substantial preference against models $f(Q,T) =
-(Q+2H_0c(Q/(6H_0^2))^{n+1})/G_N + bT$ and $f(Q,T) =
-(Q+2H_0c(Q/(6H_0^2))^{n+1} + 2\Lambda)/G_N + bT$. Our models were successful
to reproduce $\Lambda CDM$ acceleration from low redshifts.
