I agree. Certainly Little Mermaid, and probably Little Mermaid 'Janet' AM/AOS. 'Janet' was very widely distributed but not the only one out there, and they all tend to be variable in lip shape, color and pattern depending on environmental conditions, so can't be absolutely certain.
Small correction though. It was never a Blc. Original registration as Brassocattleya (Bc.). Officially, it is now Brassocatanthe (Bct.).