Welcome, lieselp! Glad to have you join us.
You have your hands full and I can relate. You are almost exactly, to the day, the same age as one of our sons. He has three children, 6, 4, and 2, so you folks have little spare time.
There are many knowledgeable members on this board who will be more than happy to share their wisdom on foods for picky children. I'm not familiar with that situation because, fortunately, my children ate just about anything put in front of them. I was blessed, indeed.
Just sit back and wait. You'll get many, many answers. Stay, too, you'll also meet tons of new friends and have a great time.
"As a girl I had zero interest in the stove." - Julia Child
This is real inspiration. Look what Julia became!