There really isn't any mystery here. Yamane's own multiple recollections of Bloodlines being her first work within the series should put a firm stop to any second-guessing, but let's just reiterate once more.
1) "Konami Kukeiha Club" was an umbrella term for composers working for Konami at the time. It wasn't a solid unit of a select few people, just a collective moniker they could use as shorthand in game credits when most people went by inscrutable pseudonyms to begin with. Yamane belonged to the group during her time as much as anyone else, but it doesn't mean everything credited to them also automatically involves her.
Incidentally, "Kukeiha Club" was a separate element within Konami's league of musicians, being an in-house live band who recorded arrangements of Konami music as well as some original material. There's often confusion between the two, for obvious reasons, and it doesn't help that there was overlap between the members of each group. Yamane wasn't part of Kukeiha Club the band, it should be noted.
2) Castlevania III isn't a game where only an intentionally vague Konami Kukeiha Club credit exists for the sound team - the composers and programmers are credited under their own names, within the game and outside of it. They are Hidenori Maezawa, Jun Funahashi, Yukie Morimoto and Yoshinori Sasaki. Maezawa, by his own account, was also one of the people responsible for creating the VRC6 chip utilized in the Japanese version of the game for enhanced sound and graphical capabilities, but he didn't work on converting the original music to the NES hardware. Since most outside sources and soundtrack notes credit the first three for composition, it would be a likely assumption that Sasaki was the person who handled the arrangement of the NES tracks, either alone or with Funahashi and/or Morimoto. In any case, this is the group of people who created the game's sound, however the particulars actually line up, and Yamane isn't one of them.
I'm not going to cite any sources. Believe with your heart~