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Any broadband light pollution filter from most manufacturers will do what you're asking, that's why they call them light pollution filters, whether it is moonlight or street lights or the neighbours lights. Though LED lights are more problematic, just get an Moon and Skyglow filter like the Baader M & S filter or an UHC filter . They wont magically turn the sky black but will increase the contrast and make a noticeable difference.
For imaging, if that is what you are after, then there are various Deep Sky filters available like the Optolong range or ZWO or Antlia or Astronomics, or many others, that increase the contrast for nebulae by blocking unwanted light pollution or moonlight.
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