Baby Bottles 🍼

Eva 🌸 • Happily married 💛 | Baby girl otw 🎀
I've been going to Walmart and Target, looking at bottles and trying to see the difference between the nipples but I just don't get it. I know all babies prefer different but those of you women who have had babies already, what do you reccomend and is there different sizes on the nipple? I'm a ftm.