I just wanted to ask the same question. I did some research before and found this nine names:

1. Tommy Clucas (2004 Junior)
2. Allan Jackson (2004 Senior)
3. Ian Pattinson (2004 Senior)
4. Davy Morgan (2004 Senior)
5. Seamus Greene (2005 Senior)
6. Malachi Mitchell-Thomas (2015 Junior)
7. Billy Redmayne (2015 Senior)
8. Andrew Dudgeon (2016 Junior)
9. Tom Weeden (2016 Senior)

But I think I heard on the radio today that Tom Weeden is the tenth member of the Tommy Club. So it seems I missed someone. So I am not sure about this.