Odin - https://odin-lang.org/
Zig - https://ziglang.org/
Beef - https://www.beeflang.org/
Jai (not public yet) - [1]
Carbon (C++) - https://github.com/carbon-language/carbon-lang
D Lang - https://dlang.org/
Rust - https://www.rust-lang.org/
cppfront (Herb Sutter's C++ frontend/syntax) - https://github.com/hsutter/cppfront
Nim - https://nim-lang.org/
Crystal (not sure if this counts) - https://crystal-lang.org/
Vale - https://vale.dev/
Hylo (formerly Val, just found it now) - https://www.hylo-lang.org/
Vala (compiles to C, some GTK apps are written in this) - https://vala.dev/
C3 - https://github.com/c3lang/c3c
Rune (last commit 7 months ago) - https://github.com/google/rune
Kit (dead, last commit 5 years ago) - https://github.com/kitlang/kit
There's probably more. That's all I can recall off the top of my head and/or what I have in my notes.
There's also Haskell [2], which compiles down to C-- [3] (a C like language). Not sure if this counts either.
[1]: https://en.wikipedia.org/wiki/Jonathan_Blow#2017%E2%80%93pre...