your child is perfectly normal, just being a one year old kid. my kid call dad's first too. it's because the sound of 'D' is easier for a kid than the sound of 'M'. so that's normal. your kid still loves you the same.
does your baby chair have a foot rest? my kid will stand up too if he is seated for too long, it's tiring for a baby to be dangling the legs,I am using ikea chair btw and he will rest his feet on my lap LOL.
as for the slapping of his hands on the table, it's a phase. nothing rude about that, a baby don't think like how we think, to them it's fun. the more you stop,the more they do. so yes, it's a phase and it will pass.