6 month old is developing strange?

Is anyone elses 6 month old a bit of an odd duck? He has never rolled from tummy to back in the traditional way, he goes butt up and flops over lol. And now He has never really army crawled. He gets himself in to crawling position but cant figure out the arms, he almost inch worms across the floor and now hes already pulling up in furniture. I feel like he never masters or perfects a skill before hes already on to a new one. Here is a picture of my goober today, he figured out how to pull the drawer open and pull up on it to standing. He will be 7 months on the 18th.