Complete noob question: I see PLA filament out there with wildly different melting points. What's the deal here? What's better?

Buying my first printer and getting some PLA to start with just to learn the basics. But on the order sheet I see wildly different temps listed, with minimums starting at 145 and going all the way up to 205. What's the difference here? See below:

https://preview.redd.it/hw44e3a72km81.png?width=439&format=png&auto=webp&s=c3b0208cb54d94ea3910705e17857dcc02535633