Unfortunately, nonnie, I don’t really read fanfiction all that often. (I know. I’m terrible, right?) But, there are quite a few that I’ve read and absolutely loved.
A Month of Sundays received mixed reviews, but, personally, I adored it. It does centre mainly around Jily, but there’s some fantastic banter in there from the boys. It was super cute and loaded with fluff.
I’m currently reading The Life and Times, a literary masterpiece, and one that, though it is fantastic in terms of Jily, could not be more accurate when it comes to the Marauders. Admittedly, I really should’ve read I’ll Take it Shaken, Not Stirred first, although the Great and Almighty Jewels did state explicitly that The Life and Times is not the sequel to I’ll Take it Shaken, Not Stirred, however, I still think it would’ve provided some useful backstory in regards to references. You could do it this way, but I didn’t. Furthermore, I haven’t even read ITISNS, yet, but I intend to as soon as I’ve read TLAT, and I do not doubt that the former is anything less than fabulous, if Jewel’s writing abilities in the latter is anything to go by.
I’ve also just started on Text Talk, which, whilst I don’t really ship Wolfstar, is another famed literary classic that I am enjoying highly.
Again, I know that this is a limited list, but I’m sure that a lot of my chums could provide you with more recommendations. Furthermore, plenty of them write fantastic one-shots, themselves, whereas the aforementioned fics are all multi-chapters. My own writing tag is here.
And I will reinforced the somewhat problematic predicament that these aren’t explicitly Marauders, by they are Marauder’s Era. They focus more on certain ships; Jily, of course, and others.
Hopefully this is helpful!