All highly fictionalized and I have had trouble finding information on the real counterparts (aside from the Cardinal). I started learning about that period of history after listening to the D'Artagnan Romances in audiobook form.
The other interesting thing is Gatien de Courtilz de Sanras wrote semi-fictional accounts of D'Artagnan, published 27 years after D'artagnan's death and 144 years before Dumas' The Three Musketeers ( https://en.wikipedia.org/wiki/Gatien_de_Courtilz_de_Sandras ).