Is there a certain kind of Laptop required when tethering Wi-Fi to it by iPhone?

I have an iPhone 6s (if that matters) and I'm looking for a laptop for work. I work from home, with Wi-Fi, but landed a 2nd job babysitting full time. They do not have Wi-Fi in their home. I heard I can tether internet to a laptop from my phone while I'm there- but I'm unsure if that applies to all laptops, certain kinds, or ones with certain features.

All laptops with Wi-Fi can connect to any "smart" phone that can do tethering. How it works is the phone connects to the Cell service, then re-transmits as a Wi-Fi access point via its Wi-Fi adapter. All laptops with Wi-Fi can connect to that, since it looks like a regular access point/router to any laptop…