Below is a round-up of the birth announcements from British newspapers. Sources include a national paper (The Telegraph, The Times) and a broad range of local newspapers from across England, Wales, Scotland and Northern Ireland.
Sibling names are in brackets. No official surnames are included; any name ending in a surname is actually a middle name.
Boys:
Atlas Michael Maurice
Edward John Michael
Henry Alexander John
Henry John (Ruby May, Tilly Lee, Libby Fay & Penny Jay)
Hugo Mika (Rafael Niilo)
Grayson Sean Francis (Heathcliff) -- name possibly a nod to dad Gary?
Kayden Mel (Safron Mai; half-sibs: Ashley & Ebonie)
Oscar Nicholas Thomas (Charles Frederick John "Charlie")
Rory Christopher William
Zane Blaise (Zarina Maria)
Girls:
Agatha Jane Violet
Antonia Sarah
Clara Seren
Darcey Violet Ewing (Wilfred Stamp Ewing) -- niece by marriage of Princess Eugenie.
Essie Lorna Mary
Louisa Mary Cecilia (Willa)
Talitha Florence Brea
Thea Rory (Elizabeth "Beth" Malcolm) -- Malcolm was late grandad's name.
Twins:
Elliot James & Emmeline Hope
I cross-reference older BAs to find the full names of the siblings, however often they are missing (especially the eldest siblings, or for half-siblings) which explains why you will sometimes see something like: George Henry (Lucy, Emma & Jack Arthur). "Lucy" and "Emma" may well have middle names as well; I simply cannot find them online.
