Here's a ST sort with a filter for regular files which doesn't depend on the presence of a dot (or its absence in directory names).

my @files_by_mtime =
    map  { $_->[1] }
    sort { $a->[0] <=> $b->[0] }
    map  { -f ? [(stat _ )[9], $_] : () }
    glob "$datapath/*";
[download]

I've substituted mtime for "creation time". The special filehandle _ avoids calling stat twice in that map block.