  Our hadro-charmonium and compact tetraquark model predictions, published
before the BESIII and LHCb experimental data for the $Z_{\rm cs}(3985)$ and
$Z_{\rm cs}(4003)$ tetraquarks were released, match surprisingly well with
them. Here, we extend our results for the $P_{\rm cs}$ states to $\Lambda$ +
charmonium configurations and also our hadro-charmonium predictions for $Z_{\rm
c}$ and $X_{\rm c}$ tetraquarks to charmonium + pion/eta. We use them, in
combination with our previous findings, to discuss the possible emergence of
SU(3)$_{\rm f}$ pentaquark octets and tetraquark nonets in the hidden-charm
sector as a tool to discriminate among different theoretical interpretations.
