Yes, long, narrow feet are a special challenge!
My feet also grew 1/2 size with 2 of my 4 pregnancies. I sure didn’t need longer feet, but my sons were worth it! LOL
I’ve worn a size 8 for years. I have problems with most of the newer shoes and can’t order online b/c of fit, and, quite frankly don’t like most of the styles. I have narrow ankles and I used to be able to get shoes with same. Also have a decent arch (many years of ballet?). I can’t wear all of the very flat shoes that have been “in” for a few years as I almost flop out of them and there is no arch support. I wore heels for many years but can’t do so as much now, especially the really high ones - have been wearing lower heels, flats with an arch and a bit of a hell, tennis, and, slippers around the house too long. I honestly don’t know how women walk in those very high heels.
I have a couple of pair of Cole Hahn, Ralph Lauren and Anne Klein that I got on sale for a great price that are comfortable.