  The spin-$1/2$ Heisenberg antiferromagnet on the two-dimensional ruby and
maple-leaf lattices is emerging as a new paradigmatic model of frustrated
quantum magnetism, with the potential to realize intricate many-body phases on
both mineral and synthetic platforms. We provide evidence that the generalized
model interpolating between these two lattices features an extended quantum
spin liquid ground state, which is gapless on the ruby lattice and gapped on
the maple-leaf lattice, with the transition between the two occurring midway.
We present equal-time spin structure factors which further characterize the
nature of the presumed quantum spin liquid. Our results are based on one of the
most extensive state-of-the-art variational infinite tensor network
calculations to date, thereby helping us to resolve the long-standing issue of
the delicate competition between magnetically ordered and paramagnetic states
in this family of models.
