  We employ a variety of ab initio methods including Faddeev-Yakubovsky
equations, No-Core Configuration Interaction Approach, Coupled-Cluster Theory
and In-Medium Similarity Renormalization Group to perform a comprehensive
analysis of the nucleon-deuteron elastic and breakup reactions and selected
properties of light and medium-mass nuclei up to 48Ca using the recently
constructed semilocal coordinate-space regularized chiral nucleon-nucleon
potentials. We compare the results with those based on selected
phenomenological and chiral EFT two-nucleon potentials, discuss the convergence
pattern of the chiral expansion and estimate the achievable theoretical
accuracy at various chiral orders using the novel approach to quantify
truncation errors of the chiral expansion without relying on cutoff variation.
We also address the robustness of this method and explore alternative ways to
estimate the theoretical uncertainty from the truncation of the chiral
expansion.
