Other forms: doulas
A doula is someone who works as a companion or coach to a woman while she's giving birth. Most doulas provide support before or after childbirth as well.
Unlike a midwife, nurse, or doctor, a doula doesn't have a medical role in childbirth, but is there to give expectant parents whatever kind of support they need. A doula might answer questions and provide information before the birth, rub a woman's back while she's in labor, and give advice about parenting concerns. Death doulas provide a similar type of support to patients at the end of their lives.