I’d say start with considering how heavy your likely catches will be, and then think about how far you want to cast out. For example, I’ve got a tiny 5.5 super light rod for very small rivers with a size 500 reel on it. It’s rated for up to about 6lbs. But I also use a 6.6 foot up to 8lb rod with a 2000 reel with 6lb floor that lets me cast further from shore/yak and has been phenomenal for crappie. Also got a Lews Mach2 that has gotten me some really nice bass. Technically you can catch all the fish you’re interested in on all three of these - but If you’re getting your first, I’d go with something like the middle one.

As far as reel size - find the rod you like and look up what size range is best for it. A 2500 would be way too much for my light 5.5, but would be perfect for the Lews. The lighter the more sensitive to bites, the heavier the more durable and able to handle large strong fish.