I have quite a few C++ proposals I am working on and percolating through the C++ Standards Committee. You will find the submitted and unsubmitted ones below! Be sure to also check out the proposals and standard tags for any writeups related to C++ proposals!

Actively Pursued Evolution Proposals:

C++ p1040: std::embed Published Latest Draft
C++ p1629: Standard Text Encoding Published Latest Draft
C++ p1664: Reconstructible Ranges Published Latest Draft
C++ and C n2499 + p1967: Preprocessor embed - Binary Resource Inclusion Published Latest Draft
C n2440: Restartable and Non-Restartable Functions for Efficient Character Conversions Published Latest Draft

Approved Proposals:

C++ Library Evolution Approved, in Library Wording C++23 p1682: std::to_underlying(T enum_value) Published Latest Draft
C++ Library Evolution Approved, in Library Wording C++23 p1132: out_ptr - a scalable output pointer abstraction Published Latest Draft

Completed / Merged Proposals:

C++ p1025: Update References to the Unicode Standard Published Accepted!    
C++ p1301: nodiscard should have a reason Published Accepted!    
C n2448: [[nodiscard(“should have a reason”)]] Published Accepted!    
C++ Pre-approved for C++23 C++23 p0330: Literal Suffixes for ptrdiff_t and size_t Published Accepted!

Being Reworked from Feedback:

C++ p1214: Callables Cleanup! - Overloading and Pointer-to-Members Published Latest Draft
C++ p1039: I got you, FAM - Flexible Array Members for C++ Published Latest Draft
C++ p1378: consteval is_string_literal(T*) Not Published Latest Draft

Educational

These proposals are educational in nature only and, while making recommendations, will not see additional pursuit or wording.

C++ p1683: A Survey of References for Standard Library Types - A Survey of Optionals Published Latest Draft

Expired:

These proposals are dead and will not be picked up again.

C++ p1175: A simple and practical optional reference for C++ Published Latest Draft
C++ p1130: Module Resource Requirement Propagation Published Latest Draft

Cannot Pursue

These proposals are challenging and may require significant rework or language enhancement. Some have also been superseded by other proposals.

C++ p0051: std::overload Not Published Latest Draft
C++ p1803: packexpr(args, I) – compile-time friendly pack inspection Published Latest Draft
C++ p1193: Explicitly Specified Returns for (Implicit) Conversions Published Latest Draft