I just discovered Eliza Mary Doyle on YouTube. I think she is getting a very nice clawhammer sound out of her banjo. The banjo seems to be (better seen on other video clips) an Iida flathead resonator banjo. This is one of the many nice clips (starts and ends with finger-picking, but clawhammer most of the time):
By the way, I just saw she also plays with "The Dead South" (same banjo often without the resonator).
'Banjo cake' 6 hrs
'Gold Tone BG-250' 6 hrs
'A song for Koriander' 7 hrs