Sorry for any repeats, I'm just brain dumping every A name I can think of for you:
Anna, Annie, Annia, Annabelle, Annabella, Anais, Anoushka, Anita, Annetta, Anastasia, Antonia, Antonina, Anouk, Anika, Arabella, Arabelle, Aroush, Amy, Amelia, Amelie, Amalia, Amalie, Abigail, Abbie, Alice, Alison, Alicia, Alisha, Alyssa, Allie, Alexa, Alexia, Alexis, Alexie, Alexandra, Alessandra, Alejandra, Alessa, Alessia, Amber, Autumn, April, Ariel, Aria, Ayla, Amanda, Aurora, Angel, Angela, Angelina, Angelica, Angelique, Angie, Ashleigh, Ashlynn, Aisling, Aoife, Angharad, Ailsa, Ailie, Aileen, Arlene, Audrey, Audra, Aubrey, Addison, Adalyn, Avery, Atlanta, Asha, Asia, Adela, Adele, Adelaide, Adelina, Adeline, Ada, Ava, Araminta, Astrid, Agnes, Agatha, Agata, Alivia, Ariana, Adriana, Adrienne, Adrianne, Arianne, Aurelia, Adrielle, Andrina, Ariella, Arietty, August, Augusta, Augustina, Anya, Aniya, Anaya, Amaya, Amina, Amira, Amara, Alara, Aliza, Alina, Alannah, Alayna, Alondra, Allegra, Aaliyah, Ashanti, Alishba, Amanpreet, Amrita, Alpha, Aphra, Annalise, Alma, Alba, Asma, Aqsa, Arwa, Avis, Avril, Adenike