Oh, come on, you're cherry picking the features that suit your argument. If we include "garbage collected", that gets rid of C and C++. If we include "dynamically typed", that gets rid of OCaml, ML, Haskell. If we include "single namespace for functions and variables", that gets rid of Ruby, Io, and Perl. Now we're down to JavaScript, Python, and Scheme, which, yes, are all in basically the same family of languages. If you add the (admittedly subjective) feature "small language spec", that gets rid of Python, and we're left with JavaScript and Scheme as the only two mainstream languages with that particular feature set.
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Oh, come on, you're cherry picking the features that suit your argument. If we include "garbage collected", that gets rid of C and C++. If we include "dynamically typed", that gets rid of OCaml, ML, Haskell. If we include "single namespace for functions and variables", that gets rid of Ruby, Io, and Perl. Now we're down to JavaScript, Python, and Scheme, which, yes, are all in basically the same family of languages. If you add the (admittedly subjective) feature "small language spec", that gets rid of Python, and we're left with JavaScript and Scheme as the only two mainstream languages with that particular feature set.