Have you tried making fruit smoothies with or without protein powder Archer? I emulsify my fruit in the blender, usually frozen fruit like blueberries, strawberries, mixed fruit, etc. I use almond milk as it has twice the calcium and is low in calories. If you are looking to add pounds and are not lactose intolerant use milk for extra calories. I use Plant Fusion protein mix that is hypoallergenic and furnishes 43% of the daily protein required. You can also use Whey protein powders if you can tolerate them but please stay away from sugary ones. I always add a banana and sometimes spinach, carrots and fresh pineapple etc.
This way you avoid yogurt, as you say it bothers you. Or you can try making them with yogurt instead of with protein powder. There are lots of smoothie recipes on the internet.
By doing this the fruit doesn't come out the back door in chunks and it helps your small intestines absorb nutrients better - I think. I've read over and over again that our bodies are getting the nutrients even though the food comes out looking like it did going in
With smoothies like this the end product is different. The color of your BM's will be interesting, like green from blueberries etc. I also need to take Loperamide, prescription Imodium, because of my j-pouch problems and you might need something like this too with smoothies.
Just a suggestion to help you get fruit back in your diet. You might also want to try to incorporate Ensure like products. I don't know how they would taste if used instead of a protein mix in a smoothie but that might be an idea too. We use to have to mix ice cream or pudding with ensure and freeze it to get my dad to take it as he couldn't stand drinking it.
I think you are getting a lot of good advice. Keep looking for answers and seeking out doctors until you find one that can help you. I know how frustrating it is to not get any help and answers from doctors. Many see you for 10 minutes and if nothing comes to their mind in that time they are out the door and you are out of their mind. Well, they do dictate or chart notes about your visit but many do this during your office call now. It is good if they can run tests to find things, like an endocrinologist, and can give you direction resulting from the test results but that's not usually what you need. So keep looking for a doctor that can help you. I know it is frustrating. It took me years to get my UC diagnosed.