Cool, I like these kinds of projects. When it comes to embedding a scripting language in C, there are already some excellent options: Notable ones are Janet, Guile, and Lua. Tcl is also worth considering. My personal favorite is still Janet[0]. Others?
That list (or any similar list) would be so helpful if it had a health column, something that takes into account number of contributors, time since last commit, number of forks, number of commits, etc. So many projects are effectively dead but it's not obvious at first sight, and it takes 2 or 3 whole minutes to figure out. That seems short but it adds up when evaluating a project, causing people to just go to a well known solution like Lua (and why not? Lua is just fine; in fact it's great).
AngelScript. Matured & maintained since 2003, is fully typed and with C syntax. https://www.angelcode.com/angelscript/
Yes very C-like.. One immediate difference is that in these C-like scripting languages there’s a split between definitions and executable commands. In Cicada there are only executable commands: definitions are done using a define operator. (That’s because everything is on the heap; Cicada functions don’t have access to the stack). I personally think the latter method makes more sense for command-line interactivity, but that’s a matter of taste.
Io is nice (Smalltalk/Self-like). A mostly comprehensive list: https://dbohdan.github.io/embedded-scripting-languages/