Obviously you can flatten this inheritance tree any way you like, but while all C-likes are obviously algol-likes I do think it's useful to consider C-like a distinct branch within that.
That said I think you probably want more than just curly braces to define C-like even then.
The replacement of "}" with "end" etc, is a trivial replacement, not a different type of syntax.
Lisp, Prolog, etc, would be a non-C syntax.