Ill take those recommendations now, thank you.
For the contrast books you can just search contrast books on amazon and get a bunch that pop up. Our kid liked Hello, Bugs and Hello, Animals the most. Look Look was another one I remember.
Kids learn through repetition, so books with repeating 'choruses' are really good, and what he always requested the most. You will get fucking sick of some of the books way before your kid does. Some of these I know by heart we've read them so damn much.
These are very much built on that repetition mechanic, and some of his favorites/nightly reads:
The Little Blue Truck, and the sequels.
Old Mcdonald Had a Truck
The Pout Pout Fish, the sequels weren't as good but he liked them.
There was an Old Dragon Who Swallowed a Knight.
Other good ones when he was younger
Is That You Monster? is a good sensory book
The Color Monster is a good one about feelings
Darth Vader and Son (Or Daughter) is cute, and he still requests that one
Construction (and the other ones by Sutton - Lovelock)
Stack the Cats
Brown Bear, Brown Bear, What do you See (and other Eric Carle Books, very hungry caterpillar, head to toe, etc)
Others he liked a lot with good stories/art, probably more geared towards when they're 2+ and can understand more words
What Do you Do with an Idea / Problem
The Summer Nick Taught His Cats to Read
The Book With No Pictures
The Bad Seed
Dragons Love Tacos
Peanut Butter and Brains
Little Penguin Gets the Hiccups
Penguin Problems
Cat in the Hat / Green Eggs and Ham / Various other Dr. Suess books
Robo-Sauce
Clifford the Big Red Dog books
Berenstain Bears stuff
I Want My Hat Back
When he got more advanced, maybe late three or early four he started liking the more advanced Dr. Suess like Fox in Sox, Horton Hears a Who, etc. and longer Stories:
Nate the Great series
Diva and Flea
Greylegs / The Snow Cat Prince (loves Snow Cat Prince, it was nightly for like three weeks after I got it. It's more like a graphic novel for kids)
Dog Man (comic style book)
5 Minute Marvel/DC Stories (There are other books in the '5 minute' series, but I haven't tried any)
The What Should Danny Do? books were good to show him about choices and consequences once he started being a shitlord mid-four. There's a Darla version if you decide your kid is a girl.
When you start purchasing books on Amazon, it will recommend others like it. A lot of these I found through that method, just buying random 5-star books that were similar and the story sounded decent. I also bought a lot because you end up getting so sick of reading the same book night after night you need to change it up. I'm guessing we've had a few hundred books by now, and he's five. Just force yourself to read every night, once you get into a routine. And talk to them like they are adults, even now, it goes a long way. Let grandma talk to them in the stupid baby voice.
Word exposure is the number one thing you can do to raise an intelligent kid. It's the only thing we've really done beyond what other parents do and it shows. My five year old reads better than his ten year old cousin and other kids in our neighborhood that are 3-4 years older than him. He was singing his ABC's before he turned two and we know six year old's who still can't. Good luck, and have fun!