Yeah, we've always been very striker-heavy, and I do think that's a common problem. Like I said when I made Tristan, I was reluctant to make a striker because we're already flooded with them. Unfortunately, avengers are just too awesome, and I had to make one
I like how both of my PCs are the only one in their race/class combination (though that may change for elven avenger). Does it make me an elf lover that both are elves?
Looking at that table is interesting, though. For example, it seems that warlords were more popular when L4W started than they are now, because they're tied for the most 2nd level characters, but have very few 1st level characters. I also wonder what it says about ranger and rogue players that there's so few above 1st level

(For the record, I love the rogue class as well, and had thought about rolling a rogue instead of Raiyek.)
Something else to note is that the table I posted includes
all approved characters, even ones who have never showed their face in the tavern, or who have disappeared mysteriously. The numbers for actual active characters may be different, but I think it's safe to say that there's still more strikers than anything else and a shortage of leaders and controllers.