well, amongst the garbage that's collecting in here, I'll explain
With respect to strong acids/bases, we have a species that has a great affinity to either take or give hydrogens away with respect to itself, a strong acid maintains a high affinity to donate its protons thus analogously it has a low affinity to give its protons away.
the graphs with a sharp curve and sudden change of pH correspond to
the analyte being consumed, therefore nothing is hindering the change of pH other than water