# Plot a list vertically in a graph

For a parametrized matrix $$H(\lambda)$$, how do I plot all the eigenvalues of the matrix vertically corresponding to a particular value of $$\lambda$$? i.e. we use $$\lambda$$ as the horizontal axis and the eigenvalues are along the vertically axis.

ps. We can for sure plot each of these points separately, but I’m wondering whether there is a simpler way. Thanks.