Would assume the REC is Rav Elya Chazan?
There is no specific seat for any specific yeshiva. Never was. Mir did not have anyone on the Moetzes after Rav Avrohom Kalmanovitz was nifter until Rav Elya Brudny. Not R Shmuel B, and not R SM Kalmanovitz. Philly had both R Elya and R Shmuel for a decent period of time. Was R Yisroel Belsky ever on the Moetzes? Don’t think so. Telz always had someone, but not since R Chaim Stein was nifter, unless you count R AC Levin in Chicago. But he was on together with R Chaim for many years, so that would shlug up the sevara anyway. And now he’s gone, so how many slots does Telz get, and who gets them?