Replacing English ivy on Bank
There are several native plant alternatives to English ivy that are suitable for bank stabilization. Take a look at this excellent publication from the Virginia Native Plant Society. It discusses English ivy removal and several replacement options -- which depend on the site conditions you have and the goals you want to achieve. https://vnps.org/download/vnps/vnps_brochures/Alternatives-to-English-Ivy.pdf
You did not mention if your slope gets full sun or shade. We have lists of options for both situations on the following pages.