Peggy approach to advertising is very similar to Don as well. She and him both like to carefully think and wait for inspiration.
Pete trying so desperately to be an Alpha Male and failing. He genuinely has the right ideas with regards to business but doesn’t have the charisma or people skills to pull it off.
What a journey it has been. I think the finale left most of the characters (except Betty) in a better place. Peggy has Stan. Joan is starting her own business. That little weasel Pete has reunited with Trudy.
As for Don, I doubt he’ll change drastically. But he’s in a better place enough for him to come up with that classic Coke commercial.
It was hard seeing him self-destruct with all those pointless affairs in seasons 6 and 7.