For girls and boys?
Hard with no guidelines but my favourites (in 'type' groups because I don't know what your taste is)
Girls:
Abigail, Arabella, Annabelle, Charlotte, Cassandra, Felicity, Francesca, Georgina, Hannah, Isabelle, Isabella, Jessica, Juliette, Matilda, Madeleine, Miranda, Natasha, Natalie, Rebecca, Sophia, Xanthe
Ava, Amy, Ayla, Chloe, Cara, Cerys, Eva, Ella, Enya, Farrah, Lyla, Maya, Mila, Nyah, Nia, Rosie, Sadie, Thea, Zara, Zia
Avery, Addison, Bailey, Cassidy, Delaney, Emerson, Genesis, Giselle, Hayley, Kayley, Kayla, Kyla, Madison, Piper, Paisley, Riley, Savannah, Sienna, Sutton, Taylor, Tegan, Zillah
Boys:
Alexander, Benjamin, Christian, Daniel, Finley, George, Harry, Isaac, Joshua, Joseph, Jacob, John, Matthew, Noah, Nathaniel, Nicholas, Oscar, Patrick, Rueben, Samuel, Thomas, William, Xavier, Zachary
Alfie, Aaron, Aiden, Charlie, Callum, Conor, Felix, Harvey, Jake, Jack, Luca, Milan, Owen, Zack
Austin, Ashton, Brogan, Carter, Harris, Jackson, Logan, Mason, Morgan, Parker, Tallon