Are gradual, but significant, personality changes normal after muti-year sobriety?

So, yeah. It's been a few years sober now, so that is nice.

One thing I have noticed about myself is the actual existence of a personality. It wasn't a change that happened within the first few months of being sober, but over the following years.

Strangely enough, a bizarre trait is that if given the chance, I can talk about just about anything for hours. My saving grace is that I was always a repository for massive amounts of random information, but now, I can string all of that data together into coherent sentences then easily pivot into all related sub-topics and associated information on top of that.

I make a ton more off-the-cuff jokes now and I don't even know where they come from. It seems I have the ability to make people laugh, which I never thought possible.

Overall, my personality has become extremely broad these days and the above is just a couple of examples. One might say that I am a pleasant person to be around? (That is a very strange feeling, BTW.)

Has anyone else seen themselves or others go through massive personality shifts like I describe? I am not understating "massive". I surprise myself nearly every day with how intense I can get.

FWIW, I was an extremely heavy drinker when I quit and was about a year into serious dependency.