Help me understand the order of The d’Artagnan Romances!

I’ve honestly been trying to figure this out for months — I’m seeing so much varying info!

I understand there are at least five titles associated with the d’Artagnan Romances:

1. The Three Musketeers
2. Twenty Years After
3. The Vicomte of Bragelonne
4. Louise de la Vallière
5. The Man in the Iron Mask

However I also see the titles “Ten Years After” and “The Red Sphinx” thrown on some lists. My issue is that I’ve seen them listed in different orders, or with some titles omitted, or with sources suggesting some of the titles are unnecessary/irrelevant to the others’ stories.

My question is: what is the true reading order? Do I even need to read them in order? I read The Three Musketeers many years ago and would be happy to reread for the sake of continuity. I found a great vintage copy of Iron Mask that I’d love to dig into but I want to do the series justice!

Thanks in advance!