This is the list of all currently existing TLDs: https://data.iana.org/TLD/tlds-alpha-by-domain.txt

Note that IDN TLDs are presented in punycode in that list (the XN-- ones), so you'd want to convert them to Unicode to see what they actually look like (e.g. many are Chinese characters).

There's a wikipedia entry--can't speak for its accuracy[0]. There's likely more official/accurate lists elsewhere that shouldn't be too hard to find if needed.

[0] https://en.wikipedia.org/wiki/List_of_Internet_top-level_dom...