There are 468 complete, >1000 words, English-language works for Loki/Steve Rogers, filtered here.
There's a weirdness about Loki in AO3. There's a "Loki" tag and a "Loki (Marvel)" tag. I wonder if you were looking at the "Loki" tag? The vast majority of writers use the Loki (Marvel) tag, but unless you're writing MCU/Norse mythology crossover fic that has nothing to do with Loki from the movies, the two Loki tags mean the same thing.
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There's a weirdness about Loki in AO3. There's a "Loki" tag and a "Loki (Marvel)" tag. I wonder if you were looking at the "Loki" tag? The vast majority of writers use the Loki (Marvel) tag, but unless you're writing MCU/Norse mythology crossover fic that has nothing to do with Loki from the movies, the two Loki tags mean the same thing.