  We investigate quasitopological black holes in $(2+1)$ dimensions in the
context of electromagnetic-generalized-quasitopological-gravities (EM-GQT). For
three different families of geometries of quasitopological nature, we study the
causal structure and their response to a probe scalar field. To linear order,
we verify that the scalar field evolves stably, decaying in different towers of
quasinormal modes. The studied black holes are either charged geometries
(regular and singular) or a regular Ba\~nados-Teitelboim-Zanelli (BTZ)-like
black hole, both coming from the EM-GQT theory characterized by nonminimal
coupling parameters between gravity and a background scalar field. We calculate
the quasinormal modes applying different numerical methods with convergent
results between them. The oscillations demonstrate a very peculiar structure
for charged black holes: in the intermediate and near extremal cases, a
particular scaling arises, similar to that of the rotating BTZ geometry, with
the modes being proportional to the distance between horizons. For the single
horizon black hole solution, we identify the presence of different quasinormal
families by analyzing the features of that spectrum. In all three considered
geometries, no instabilities were found.
