How to sort the ANSI encodings in conversion tool

I am making a programming text editor (IDE) that will support only UTF-8 files.

But want to provide some way to convert the old ANSI encoded files. So, I have conversion tool that gives the user a list with code pages and preview window (it order to verify the proper conversion).

The list contains 150 different code pages.

The question is how to sort them in order to provide better user experience?

Here is a screenshot of the dialog box with wrong code page selected: