Okay I'm looking at all these top rated guides and the things people post and I've come to realize one thing. The majority of MOBAFire seems to have a misconception about how tankiness works in the meta.
People don't buy "tanky items" so they can live longer in a fight.
People buy items that give them enough survivability ALONG with the side benefits that help the team or provide presence.
Items such as warmogs and fon are rare purchases that should rarely be considered.
Rather items such as sunfires, frozen heart, aegis, GA are items that dominate the meta.