| number | Italy | Wales | England | France | Scotland | Ireland |
|---|---|---|---|---|---|---|
| 1 | Danilo Fischetti | Gareth Thomas | Ellis Genge | Jean-Baptiste Gros | Rory Sutherland | Andrew Porter |
| 2 | Giacomo Nicotera | Evan Lloyd | Luke Cowan-Dickie | Peato Mauvaka | Dave Cherry | Ronan Kelleher |
| 3 | Simone Ferrari | Henry Thomas | Will Stuart | Uini Atonio | Zander Fagerson | Finlay Bealham |
| 4 | Niccolo Cannone | Will Rowlands | Maro Itoje | Alexandre Roumat | Jonny Gray | James Ryan |
| 5 | Federico Ruzza | Dafydd Jenkins | George Martin | Emmanuel Meafou | Grant Gilchrist | Tadhg Beirne |
| 6 | Sebastian Negri | James Botham | Tom Curry | Francois Cros | Matt Fagerson | Peter O'Mahony |
| 7 | Michele Lamaro | Jac Morgan | Ben Earl | Paul Boudehent | Rory Darge | Josh van der Flier |
| 8 | Lorenzo Cannone | Taulupe Faletau | Tom Willis | Gregory Alldritt | Jack Dempsey | Caelan Doris |
| 9 | Martin Page-Relo | Tomos Williams | Alex Mitchell | Antoine Dupont | Ben White | Jamison Gibson-Park |
| 10 | Paolo Garbisi | Ben Thomas | Fin Smith | Matthieu Jalibert | Finn Russell | Sam Prendergast |
| 11 | Monty Ioane | Josh Adams | Ollie Sleightholme | Louis Bielle-Biarrey | Duhan van der Merwe | James Lowe |
| 12 | Tommaso Menoncello | Eddie James | Henry Slade | Yoram Moefana | Tom Jordan | Bundee Aki |
| 13 | Juan Ignacio Brex | Nick Tompkins | Ollie Lawrence | Pierre-Louis Barassi | Huw Jones | Robbie Henshaw |
| 14 | Ange Capuozzo | Tom Rogers | Tommy Freeman | Damian Penaud | Darcy Graham | Mack Hansen |
| 15 | Tommaso Allan | Liam Williams | Marcus Smith | Thomas Ramos | Blair Kinghorn | Hugo Keenan |
| 16 | Gianmarco Lucchesi | Elliot Dee | Jamie George | Julien Marchand | Ewan Ashman | Dan Sheehan |
| 17 | Luca Rizzoli | Nicky Smith | Fin Baxter | Cyril Baille | Pierre Schoeman | Cian Healy |
| 18 | Marco Riccioni | Keiron Assiratti | Joe Heyes | Georges-Henri Colombe | Will Hurd | Thomas Clarkson |
| 19 | Dino Lamb | Freddie Thomas | Ollie Chessum | Hugo Auradou | Sam Skinner | Ryan Baird |
| 20 | Manuel Zuliani | Aaron Wainwright | Chandler Cunningham-South | Mickael Guillard | Gregor Brown | Jack Conan |
| 21 | Ross Vintcent | Rhodri Williams | Ben Curry | Oscar Jegou | Jamie Ritchie | Conor Murray |
| 22 | Alessandro Garbisi | Dan Edwards | Harry Randall | Nolann Le Garrec | Jamie Dobie | Jack Crowley |
| 23 | Jacopo Trulla | Blair Murray | Elliot Daly | Emilien Gailleton | Stafford McDowall | Garry Ringrose |