Despite the names, all your *::* style variables are package variables which pop into existence when they are used. Consider:

use strict;
use warnings;

$main::var_my = "foo1";

my $var_my = "foo2";

print "Lexical: $var_my\n";
print "Package: $main::var_my\n";
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Prints:

Lexical: foo2
Package: foo1
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