Only the first 2 sections of that guide are relevant. Everything else is 1.0 information and therefore very out-of-date.

For WHM I usually use Pineapple Juice or Pineapple Ponzecake, BRD I use Apkallu Omelletes, MNK I use Black Truffle Risotto, and PLD I use Finger Sandwiches... all HQ since I am a well-geared cook.

It's difficult to cap these higher tier foods but in most cases they now seem to give the same %'s as the next-highest tier food but with a higher cap and higher VIT so they are worth using for that slight edge. Not to mention almost all of them are a lot less of a pain in the ass to gather the materials for than their lower tier variants. I vastly prefer gathering clusters and 4-5 materials to gathering shards and 7-8 materials.