How many D&D Monsters Are There

On a recent D&D podcast Jeremy Crawford said we there were over 1,000. That number seemed a little high if we remove "unique" creatures--but I am really not sure...I think for 5E we are at about 500ish which would indicate 1,000 is definitely reasonable...

I thought it would be interesting to try to figure out what the exact count is.

Wiki has great lists, but they are hard to sort and get the dupes out, but that may be the best way.

I have also pinged some people who may have already answered this question.