I've done a fair bit of research into this topic.
I think these few all started off running their own amateur websites that were entirely or mostly interracial based.
Janet
Sara Swirls
Christina Noir
Harmoni Kalifornia
Holly Wetlove
Rebecca Dream
Jennifer Ashton
Jenna Marie
Elysa Exhib
Florida Double Dee
Hotwife Rio
Janeyweb
Mandy Monroe
Naughty Alysha
Here's a few amateurs from tumblr, twitter, etc
BBCSlutwife4U
BLM Snowbunny
Canadian Mixed Couple
Crystina Rossi
Riley Brooke
Yoga Hotwife
As for the more mainstream pornstars, some of whom are retired now, I'll start with the definites that I know about.
Leya Falcon - Has stated that she only fucks black men in her private life, and that the only white guys she fucks are for work
Grace Harper - Made multiple videos before entering porn with black guys, including MMF and gangbangs. Now retired and pregnant with her second mixed-race baby.
Kendra Sunderland - stated in a non-porn interview that her first scene for blacked started an obsession with black men, that her white bf found out he liked watching her get fucked by BBC, and that now she only dates black men and wants to have mixed babies. The interview is available on Youtube, called "Angela Yee's Lip Service Feat Don Q & Kendra Sunderland", but it's over an hour and a half long
Melody Parker - Stated several times she only likes black guys
Katrina Jade - has tweeted several times about her liking black men, and has also made several videos of herself getting fucked by black guys outside of her work
Brooklyn Chase - Had a Pornhub profile named "Jessica Santini" that seemed to be ran by her husband that showed several recent videos they filmed of her fucking black guys in hotels
Spring Thomas - Was the star of her own all-interracial website for many years
Tori Black - Has a black baby-daddy
Jaiden West - Tweets about her liking black guys, posts videos of herself with black men
Princess Paris - Attended BMFC (Black Mans Fan Club) parties and has mentioned liking black guys in blogs and on twitter
Tamara Grace - Real-life friends with Princess Paris, attended BMFC parties with her, has a spades tattoo
Abella Anderson - dated black men and has several webcam videos of her with black guys
Sophie Dee - Married to a black man
Juelz Ventura - Was married to a black man who cheated on her, which lead to her becoming a pornstar
Sara Jay - She is or has been in relationships with black men
Kagney Linn Karter - Dated a black guy for at least 5 years
Silvia Saint - dated Mr Marcus
Leah Gotti - Dated Rob Piper, then was impregnated by, and I believe then married, another black man
Angel Allwood - Married to a black man
Jessie Rogers - Made tweets about wanting mixed babies, and I think dated Prince Yahshua
Tessa Lane - Used to gush on Twitter about black men, posted pics of herself when younger with mostly black friends
These few have either talked about liking black men as part of porn scenes they were filming, or I have seen people claim that these pornstars like black men but I have not seen it myself.
Jayden Jaymes - allegedly has stated in interviews that she only fucks black guys outside of porn (during the intro to her MMF with Sean Michaels and Prince Yahshua she states that she has "this crazy huge sexual fetish for dark skin" and likened the scene to her real life)
Eva Angelina - said during a scene that she lost her virginity to a black man and has dated black men
Capri Cavalli - stated during a scene that she does't go for pale guys, she likes "ethnic" guys
Linda Friday - allegedly stated at some point that she would only be shooting interracial from then on
Alannah Rae - said during a scene that she once got into a fight over a black guy she had been fucking, and that she didn't stop because he was "good dick"
Finally, here are some pornstars that have more boy/girl Interracial scenes (excluding BJ Only scenes) listed on iafd than they should have by random chance, so they probably have a preference for black men. For comparison the amount you would expect would be around 14-15%. Figures were based on iafd listings so are not 100% accurate and may be up to a year old now.
Cassie Bender 100%
Bella Nikole Black 55%
Abbey Rain 44%
Mia Melano 41%
Chloe Chaos 41%
Larkin Love 41%
Mia Khalifa 37%
Trinity Post 37%
Layna Landry 33%
Maitland Ward 33%
Velicity Von 32%
Kelly Divine 30%
Lexxxi Lockhart 28%
Katie Cummings 28%
Kate England 27%
Isabella Soprano 25%
Joslyn James 24%
Brianna Love 24%
Lisa Sparxxx 24%
Brooklyn Night 24%
Belladonna 23%
Tiffany Mynx 23%
Proxy Paige 23%
Jada Stevens 23%
AJ Applegate 21%
Crystal Ray 21%
Gianna Michaels 21%
Leah Luv 20%
Mila Milan 20%
Honourable mentions:
Jennifer White: 25% of her scenes since 2014 have been interracial
Anissa Kate: Although only about 10% of her overall scenes are with black men, on her personal website Anissa-Kate.club 2 out of the 7 photo albums and 7 out of 21 clips are interracial. So for the content she herself makes about 30% is with black men.
Shawna Lenee: 20% of her scenes since 2015 have been interracial