Say you are eating a low to moderate amount of carbs in your "fitness" diet. Some have argued that the most beneficial and healthy carb sources in such a case would be fruits. Lots of micronutrients and vitamins and polyphenols and antioxidants. Apples, pear, banana, citrus fruits, even some exotic fruit juices with supposedly high antioxidants, and so on, as opposed to for example rice (I'm too lazy to look up the micronutrition of rice). I saw someone argue fruit heavy diets are often a cause of something called SIBO (again too lazy to look it up). Some bodybuilders were fans of fruits as almost the sole carb source, like Phil Hernon, others like coach John Parillo warned against fruit.
What do you think? I think at least on a deficit diet the fructose wouldn't hinder fat loss, instead would maybe be good for the metabolism. When it comes to sugar, fructose is thought to be the source of many modern ills, from sucrose (table sugar) and HFCS. I've looked up the type of sugar in different fruits at some point, where the types were shown as percentages. For example grapes are pure glucose (aka dextrose aka blood sugar). Fructose though is also advantageous for liver glycogen and anabolism but in too high a quantity it becomes detrimental.
I remember Tom Platz talking about his prep diets where a meal could be a can of tuna and an apple. 
Regarding milk, a certain member talks about his brekkies of milk
Does it have it's place in bb diet? Traditionally bodybuilders always cut milk in prep. I think it can have it's place. and Layne Norton has talked about the benefits of daily for metabolism (tied to calcium IIRC). Milk is soo anabolic 
"Milk consumption activates five major pathways stimulating mTORC1 via (1) growth factors, including growth hormone (GH), insulin, and insulin-like growth factor 1 (IGF-1), (2) amino acids, especially branched-chain amino acids (BCAAs), (3) milk fat-derived palmitic acid, (4) the milk sugar lactose (β-D-galactopyranosyl-(1→4)-D-glucose, and (5) epigenetic modifiers, especially milk exosome (MEX)-derived micro-ribonucleic acids (miRs)."
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8000710/
Milk is so anabolic it can become dangerous according to these scientists. 
(Table sugar is 50% sucrose and 50% fructose by the way. Fructose is inflammatory.)
This type of diet is for health and has nothing to do with bodybuilding or anything else.
If you are a competitive athlete or a bodybuilder then it may not be optimal.
The purpose of this style of eating is to lower insulin production and increase insulin sensitivity and thus improve metabolic health.
Best foods to eat:
Meat, eggs, fish
Non-starch vegetables (green like broccoli)
Berries (but sparingly)
Cheese, cream
Nuts, seeds
Butter, healthy oils (no seed oils)
Foods not to eat or too eat only occasionally:
Juices
Fruit (not often)
Flour products
Grains (rice, wheat, cereals, etc.)
Sugars
Low fat foods
Trans fats (hydrogenated and partially hydrogenated foods)
Processed foods
Pick up your local supermarket flyer. Note the number of processed foods advertised for sale.
When in the store note how much of the food for sale is processed foods.
It's amazing.
Note on the labels how many of these processed/prepared foods contain inflammatory seed oils (canola, soybean, rapeseed, corn, vegetable).