Ex commercial (sourdough) Baker here. Cast iron will be handed down to your children’s children.
What we used was basic (good quality) sheet metal bread pans. Avoid coatings, or anything fancy… Sure they may do something in the short term… But… Same with pyrex. They used to be good, but quality has gone way down in the past 20 years, and you have to be real careful with them, like they’re made of glass or something ;)
This is one place, where possibly the cheapest option is what will win the day. Keep it simple silly :) don’t overthinking it, get something, and get baking!