I know my oldest has started to be more 'picky' about food at home since he started school and eats their food (chicken nuggets, hot dogs, pizza, and the like--*occasionally* they have something like actual piece of barbecued chicken or tacos, which I don't consider horrible)
and my dd started to say she didn't like some things after she heard him...
But I still keep offering and we still do family meals with things they don't like on the table. Sometimes DS1 will surprise me and eat tons of salad or something.
The baby is 17 months and he actually PREFERS our home-cooked leftovers to stuff like 'pizza' even though he can say the word, so far.
I've gotten progressively "crunchier" about my intros to food and progressively more lax on my junk.
For example--DS1 had jars of commercial baby food from about 5.5-6 months till around 8 months, *then* I really got him more toward table food. He had "meals" and I would feed him solids at "mealtimes" But I had an absolute *fit* about anyone giving him a candy, cookie, bite of ice cream, etc etc etc.
DD---had 'real' oatmeal and mashed table foods instead of jars, at 6 months and beyond. But I'd just nurse and not do solids if she was asleep at lunchtime or whatever. She didn't eat 3 meals a day till close to 18 mos and I was pregnant and almost milk-less. I still crabbed about 'treats' but once she seemed to REALLY WANT HERSELF what DS1 had, I decided it really wasn't worth fighting.
DS2---had chunks of foods like banana on tray to feed himself. At more like 6.5-7 months. And it was purely experimental. I remember him being about 7 months old on a road trip and I skipped solids for a couple days, exclusive nursing except for a teething cookie in the car till I could get to a place to stop. He was fed entirely what we were eating, made manageable for him to pick up.
All 3 of my children's first favorite meal, or one of the top ones anyway was DH's Okra stew--it's an African thing with okra, tomato paste and really soft cooked beef or lamb. They LOVED it. I thought he was crazy at first but...they loved it! (at like 8-9 or so months)
I guess the main thing I would say is don't ever be afraid to let them try something and don't have any preconceptions about what kids do/don't like. My DD who usually says things are 'too hot' and won't try them, asked for, and USED 4 small helpings of hot sauce as a dip the other day