Names and Authenticity in Historical Fiction (1940s)

I'm sure if anyone reads historical fiction, they will know this point of contention. A female main character born in the 1940s named Addison or a group of friends born in the 1980s called Beryl, Clara, Daphne and Doris. All names that were known in the 1980s, but the probability that there would be no Sarah, Rebecca, Laura or Gemma in sight is highly unlikely, considering they were 4 of the most popular names in 1984 in UK.

Thus I present, the 1940s (yes, hopefully the first in a series). What was emerging and would become very popular in the next few decades (and was known in that period, not names that gain sudden popularity such as Addison), what was popular (the top 10/15/20), and what was dated and gone (past popular names, now sliding down the popularity charts). Data is from where it is available. Norway, USA and Victoria, Australia are online. UK is from 'First Names' by E. Merry and my own stats for 1900s to work out dated names, and France is from 'La cote des prénoms en 2007' by J. Besnard.

UK:

Popular: Margaret, Patricia, Christine, Mary, Jean, Ann, Susan, Janet, Maureen, Barbara, Valerie, Carol, Sandra, Pauline, Elizabeth

Emerging: Diane, Angela, Catherine, Yvonne, Helen, Elaine, Jane, Lesley, Maria, Lynda, Denise, Marian, Teresa, Sally, Sarah, Julie, Caroline, Lorraine, Lynn

Dated: Mary, Elizabeth, Dorothy, Frances, Marjorie, Evelyn, Emily, Vera, Alice, Lillian, Phyllis, Doris, Florence, Ellen, Annie, Edith, Elsie, Gladys, Hilda, Ivy, Lily, Winifred

France:

Popular: Monique, Nicole, Danielle, Michèle, Jacqueline, Françoise, Jeannine, Christiane, Marie-Thérèse, Josette, Annie, Chantal, Anne-Marie, Martine, Arlette, Claude, Claudine, Éliane

Emerging: Martine, Dominique, Brigitte, Catherine, Sylvie, Patricia, Annick, Béatrice, Élisabeth, Fabrice, Florence, Ghislaine, Isabelle, Myriam, Nadine, Pascale, Sabine

Dated: Marie, Jeanne, Marguerite, Marie-Louise, Germaine, Yvonne, Madeleine, Louise, Suzanne, Marcelle, Alexandre, Alice, Camille, Joséphine, Juliette, Lucie

USA :

Popular : Mary, Linda, Barbara, Patricia, Carol, Sandra, Nancy, Sharon, Judith, Susan, Betty Carolyn, Margaret, Shirley, Judy, Karen

Emerging: Michelle, Cynthia, Deborah, Pamela, Laura, Julie, Jennifer, Angela, Debra, Teresa, Christine, Denise

Dated: Anna, Florence, Mildred, Ethel, Lillian, Gladys, Edna, Emma, Bertha, Minnie, Bessie, Grace, Mabel, Ida, Gertrude

Australia (Victoria):

Popular : Margaret, Judith, Helen, Patricia, Lynette, Barbara, Pamela, Lorraine, Beverley, Jennifer, Sandra, Elizabeth, Janice, Mary, Joan, Heather

Emerging: Robyn, Christine, Cheryl, Dianne, Karen, Vicki, Kerry, Debra

Dated: Dorothy, Valerie, Betty, June, Joyce, Jean, Lorna, Norma, Valda, Thelma, Audrey

Norway:

Popular (in this case, not necessarily the most popular names, but the names that peaked in the 1940s): Gerd, Grete, Inger, Jorunn, Kari, Karin, Kirsten, Marit, Randi, Reidun, Turid, Unni

Emerging: Anita, Ann, Anne, Aud, Berit, Eli, Elin, Elisabeth, Eva, Hilde, Marianne, May, Mette, Mona, Sissel, Tone, Tove, Wenche

Dated: Agnes, Alma, Aslaug, Borghild, Ella, Gudrun, Gunvor, Helga, Inga, Ingeborg, Ingrid, Johanne, Karen, Karoline, Klara, Kristine, Maren, Margit, Marie, Martha, Mary, Mathilde, Olga, Ragnhild, Ruth, Signe, Sigrid, Sofie, Solveig