Basically I don't experience yippie yay joys but I don't get sad or angry a lot either. I have things I like and dislike but I don't get internal reactions like "i hate this >:(" or "omg I love this sm :3" a lot, unless it's something integrated into me like really non-enjoyable thing. I sometimes feel silly and whimsy moods but I wouldn't feel like jumping in the air with my feet touching like a cartoon character, I'm just neutral idk
But somehow my facial expressions/tone are interpreted as hostile but I just think of myself having a long face and a monotone voice. I mean I do get annoyed but only if ppl insist that what they project onto me actually applies. I sometimes feel like I have to mask that aspect and say stupid catchphrases/be silly to be more palatable and it's turned into feeling the need to use emoticons or "unserious" language a lot so ppl don't get the wrong idea. It also plays into how ppl will laugh at me if I'm serious so I might as well just play the clown
Idk let me know what you think/experience down below 
So I would say my emotional range is a bit stunted so in that regard I feel similar to you. Mind you my baseline state is usually upbeat unless im in pain or something really bad just happened. The only time I ever was truly sad was during my depressive phase.
I smile a lot. Like even when I shouldnt smile. I find it hard to control it in fact. People sometimes think im laughing about them when in fact thats just my standard reaction to everything. Yes I even smile when I get bad news and can be quite chipper about it.