You remember those guys in middle school that practically had full beards? They were far and few between, sure, but they existed. At a time when most of the boys were chubby/awkward/pimply, some were already sort of muscular and tall. Some had huge feet and hands but, with the rest of their spindly frame, looked like bony little Great Dane puppies. Others didn't really seem to grow at all and stayed baby-faced well into high school, only really coming into themselves in their mid twenties.
Now, our circumstances are slightly different (for those of us that started well after our first puberty, anyway) in that our hands/feet won't substantially enlarge and we won't get any taller. All of the other stuff, though? It comes in waves just like it did for every other guy.
Personally, I got lucky as hell in the voice department; mine dropped almost immediately and, within four months, I sounded like an adult male. Currently, my voice is deeper than 90% of the guys I know. I couldn't be gendered female if I wanted to at this point.
Facial hair? Not so much yet. I've got a lot growing under my chin but it's still patchy as ****. My sideburns are sad. I have a mustache (which is ironically the only thing I didn't want) and I refuse to shave it because it's all I have.
I'm very muscular these days but I've also been busting my balls at the gym 4-5 days a week for a year. Overall, I've considered myself very lucky on most fronts... and yet, even still, I went through a similar phase to you where I looked at other trans guys and thought, 'wtf, when is it going to be -my- turn to see a man in the mirror?'. This happened the most around the 4-8 month mark. The initial elation of starting T had worn off around 4 months in and, almost immediately afterwards, I got deep into 'moon face' territory.
It's frustrating. It's impossible not to compare yourself to everyone else, too, at a time when it's most important that you don't. But cis males go through the exact same thing:
Tall guy: "Man, seriously? He can grow a beard? FML."
Short bearded guy: "Ugh, I wish I could be half his height. ***hole."
The truth is, everyone's wishing and wanting and hoping just as much as you are for that next 'magical' change. And when/if that change comes, our sights are often set elsewhere to something 'bigger and better'. It's just human nature.
You'll get there, man. The cure just happens to require a lot of patience.