It may be declassified but its still controlled by Schiffs Control of the SCIF rules of the House. They cannot say anything about what transpired in the SCIF until HE releases it. Grenell works for the Executive Branch and has merely cleared it for their concerns. SCHIFF controls. Until the Republicans get back power, they can do nothing except grumble and hold their tongues.
Every single one of these transcripts have the (name redacted) majority counsel, telling the witness, right at the beginning of them, that their testimony was being taken without it being classified. WHY then were these testimonial hearings being held in a SCIF???
That answer is simple, that allowed SCHIFF to say anything HE wanted about what was said, making statements at every break, and lie he did, lying at every break, misrepresenting what the witnesses were saying, which is now very obvious, but no one else could call him out on it.