Not sure Cetailia or Marya are known hunters. The BA murdered them, but that doesn't make them hunters.
Cetailia was likely killed because she noted a pattern of boys being murdered. Siuan may have even pointed it out to her.
Marya is specifically said to have been killed as part of the purge of women who might know of the DR. She also fits the known aspects Tamra looked for ... Marya was influential as she held post on the Grand Alliance Council during the Aiel War. Seems unlikely that it would have been noted of a random Aes Sedai otherwise.
Citalia fits the Hunter description as well. Older and strong in the power .... Given that she was likely an age peer to Tamra and of the same Ajah and that she was killed by the Black it seems fairly obvious that she was one of the Hunters. And given we never hear of her death onscreen it seems like unlikely to have been mentioned had she not been a Hunter