Progress in computing various meson-baryon scattering amplitudes is presented
on a single ensemble from the Coordinated Lattice Simulations (CLS) consortium with
$m_\pi=200$ MeV and $N_f=2+1$ dynamical fermions. The finite-volume Luscher approach
is employed to determine the lowest few partial waves from ground- and excited-state
energies computed from correlation matrices rotated in a single pivot using a generalized
eigenvector solution. This analysis requires evaluating matrices of correlation functions
between single- and two-hadron interpolating operators which are projected onto definite
spatial momenta and finite-volume irreducible representations. The stochastic LapH method
is used to estimate all needed quark propagators. Preliminary
results are presented for $I=\frac{1}{2}, \frac{3}{2}$ $N\pi$ amplitudes including the
$\Delta(1232)$ resonance and the $I=0$ $S$-wave amplitude with unit strangeness
relevant for the $\Lambda(1405)$.