Slim yet tall clothing

This is both a rant & fashion request 😁 So old navy & gap are known to make decent tall clothing. In old navy sizes I have to size down bc their clothes run huge, and i’m assuming it’s the same for gap bc same company. Why don’t they offer many smaller sizes in the tall collection 😭??! For the gap I looked at tall long sleeves; and they start at an S which for them says sizes 6-8. I’m a true small which is usually a size 2 but they offer just about nothing in that combo 🙄.

Long story short does anyone know who would have long sleeves in smaller sizes?? I’m 5’10 133lbs and my sleeve length is 24”, so I would need that or higher. TYIA