I hate Gels, PowerBars etc.. Marks & Sparks do some really nice Belgian chocoltae flapjack bars, so do most sandwich chains like Pret a Manger, Eat and others, They’re easy to eat/nibble on whilst riding.
Other choices I’ve found work well and are easy to handle:
Fig rolls (I emptied an entire packet into my jersey pocket last weekend when riding Paris-Roubaix and that worked well)
Those round honey/waffle things (Meli) you get in France/Belgium
At the Tour of Flanders I also made my own easy-to-eat savoury cheese/parma ham wraps as you get a little sick of eating nothing but sweet stuff all day.. bought 6 slices of delicious cheese plus 6 slices of smoked/cured parma ham in a supermarket, rolled a slice of each into 6 ready-to-eat little rolls and scoffed those along the way.