Several of the Flynn unmasking requests post-date the 12/29/16 Kislyak call. I've listed them below.

US Ambassador to the UN - Samantha Power - 1/11/17

Secretary of the Treasury - Jacob Lew - 1/12/17

Chief of Staff to POTUS - Denis McDonough - 1/5/17

Deputy Director of National Intelligence for Intelligence Integration - Michael Dempsey 1/17/17

Principal Deputy Director of National Intelligence - Stephanie L. O'Sullivan

CIA/CTMC - REDACTED - 1/10/17

VPOTUS - Joey Biden - 1/12/17

Additionally, look at the classification date in the bottom left corner of the document. This information was requested, and came into existence in 2018.