I'm not sure which disciplines you're planning on competing in, but I have horses of those breeds competing in most western disciplines. Depending on what you plan on competing in, I could offer you breedings from some of my horses. I can also do imports for any of those breeds. Here are a few horses I've made.
I have Hyacinth of Honiley, a foundation Dutch Warmblood mare, who competed in eventing and jumping. Due to age and a few injuries she's retired now to breeding, with 62 points in eventing and 67 in jumpers. Her breeding fee is 12k https://equus.community/viewhorse.php?id=12672
WSP Tiamat (stallion) and WSP Karisha (mare) are both competing in Pony Show Jumping. Both hold PSJ State Champion titles, and both are second/third gen ponies. In Pony Show Jumping I also have a British Riding Pony mare (can be bred with GRPs), PCRA Ciara. She's a foundation pony, but she holds PSJ International Champion title.
I also have a stallion pony in Dressage, PCRA Xavery. He holds a Local Champion title, and he's a foundation pony.