Frustrating right? Try being an Erie steam fan like me ! ;-) 1 correct engine done in S and it is mediocre at best. The only Erie Berkshire done in the past 20 years was in O scale by Sunset about 8 years ago or so and good luck finding one. How about the beautiful K5 Pacific? Boo Rim built exquisite examples in HO a few years ago. Good luck in other scales though unless you go back to 50yr old Max Gray O scale models...
As I said, and I’m taking my own advice here, stay with S because you love the size or move to a scale that better covers your prototype.
You think Erie is bad, try being an DL&W fan. I was able to get the Pocono made in O scale by Weaver Models. There is nothing even remotely close to any DL&W steam, diesels have the F3, E8 and train masters.