For the request "unicode":
N2035: Minimal Unicode support for the standard library from Matthew Austern
https://wg21.link/n2035N2207: Minimal Unicode support for the standard library (revision 2) from Matthew Austern
https://wg21.link/n2207N2238: Minimal Unicode support for the standard library (revision 3) from Matthew Austern
https://wg21.link/n2238N2295: Raw and Unicode String Literals; Unified Proposal from L. Crowl, B. Dawes
https://wg21.link/n2295N2384: Raw and Unicode String Literals; Unified Proposal (Rev. 1) from L. Crowl, B. Dawes
https://wg21.link/n2384N2442: Raw and Unicode String Literals; Unified Proposal (Rev. 2) from L. Crowl, B. Dawes
https://wg21.link/n2442N3336: Adapting Standard Library Strings and I/O to a Unicode World from Beman Dawes
https://wg21.link/n3336N3572: Unicode Support in the Standard Library from Mark Boyall
https://wg21.link/n3572P0169R0: regex and Unicode character types from Nozomu Katō
https://wg21.link/p0169r0P0353R0: Unicode Encoding Conversions for the Standard Library from Beman Dawes
https://wg21.link/p0353r0P0353R1: Unicode Friendly Encoding Conversions for the Standard Library from Beman Dawes
https://wg21.link/p0353r1P1025R0: Update The Reference To The Unicode Standard from Steve Downey
https://wg21.link/p1025r0P1025R1: Update The Reference To The Unicode Standard from Steve Downey, JeanHeyd Meneide, Martinho Fernandes
https://wg21.link/p1025r1P1080R0: SG16: Unicode meeting summaries 2018/03/28 - 2018/04/25 from Tom Honermann
https://wg21.link/p1080r0P1137R0: SG16: Unicode meeting summaries 2018/05/16 - 2018/06/20 from Tom Honermann
https://wg21.link/p1137r0P1237R0: SG16: Unicode meeting summaries 2018/07/11 - 2018/10/03 from Tom Honermann
https://wg21.link/p1237r0P1238R0: SG16: Unicode Direction from Tom Honermann, Corentin Jabot, JeanHeyd Meneide, Mark Zeren, Martinho Fernandes, Peter Bindels, Steve Downey, Zach Laine
https://wg21.link/p1238r0P1238R1: SG16: Unicode Direction from Tom Honermann, Corentin Jabot, JeanHeyd Meneide, Mark Zeren, Martinho Fernandes, Peter Bindels, Steve Downey, Zach Laine
https://wg21.link/p1238r1P1253R0: Guidelines for when a WG21 proposal should be reviewed by SG16, the text and Unicode study group from Steve Downey
https://wg21.link/p1253r0P1422R0: SG16: Unicode meeting summaries 2018/10/17 - 2019/01/09 from Tom Honermann
https://wg21.link/p1422r0There are more papers. Please use more precise query.