This year in the annual Yuletide small/rare/obscure fandom exchange there are a decent handful of Sutcliff-based stories!
Eagle of the Ninth
Only the movie version was nominated, but some of the stories are strictly bookverse. Others are fusions. Unfortunately, they are all tagged with the movie tag, so it's a little confusing. I have not read all of these, so I'm not totally sure which ones are movieverse/bookverse/fusion, but I've made educated guesses.
exiit ad caelum - Marcus/Cottia/Esca, T (teen), 4,229 words - bookverse
Nescio, sed Excrucior - gen or pre-slash, G (general), 3,127 words - fusion, mostly movie
Hearth - Esca/Marcus, G (general), 2,690 words - fusion, mostly movie
A Clear View of the Sea - Esca/Cottia/Marcus, E (explicit), 17,284 words - fusion
Whole subset (including 3 solely movieverse stories) here. Frontier Wolf
On the Mend - Alexios/Hilarion, G (general), 1,050 words
He Who Waits - Alexios/Hilarion, E (explicit, although on the lighter side of explicit), 6,821 words
After Darkness, Light - Alexios/Hilarion, T (teen), 3,510 words
The Young Wolf - gen, T (teen), 1,797 words
Sword at Sunset
Guenhumara - gen, not rated (I'd say it's a solid G), 1,434 words