Congrats on your pregnancy and your upcoming homebirth! I birthed at home last year with my second son and it was an amazing experience. I love attending homebirths because women are so free to labor as they need to. If it is your first homebirth, I hope you are as thrilled with the experience as I was.
There are a ton of amazing doulas in NYC and most love attending homebirths. You will also hear great things here about Haya and Ina from Clearbirth, Natasha (who teaches the only childbirth ed calls for homebirthers), Sarah Moore, and others.
A lot of finding a doula to work with is about personality and finding someone who you can feel really comfortable with. You might also ask your midwife is she has any one who she particularly likes to work with. I have a few midwives who send people to me regularly because we work really well together - you might see if your midwife feels this way about any local doulas.
Good luck!