Hopkins 100% because he is such a complex poet, yet examiners love students who will take a stab at him. Heaney has NOT come up at all yet (big red flag!!) and Plath/Bishop for the female poet. Ní Chuilleanain came up last year, is on the course this year and is on the 2020 course, so I really cannot see her coming up at all this year. Yeats is a lovely and strong Irish poet, like Heaney and would be good to have as a back up.
Hope this helps!