I wouldn’t over look the macro profile of whatever you settle on.
Switching from mostly wholefood carb biased on-bike sources to savoury items which are likely to have a higher fat and lower carb content is fine but something to consider.
Cheese twists/straws
Pretzels
Scotch Eggs
Sausage Rolls
Pies/Pasty’s
Sandwiches
Nature Valley do some good ‘Sweet N Salty’ bars I’m quite fond of.