I like all the films mentioned here. Great choices.

Three underrated films (off the top of my head):

This one: https://fanfare.pub/the-bounty-neglected-brilliance-62663e402132

This one: https://fanfare.pub/the-magic-box-a-neglected-gem-of-british-cinema-625745f32bdc

And this one: https://medium.com/cinemania/carlitos-way-a-neglected-gem-86d50ae63c5f