Nice bunch of seeds you're starting! There are a few things on your list I haven't tried, but all of them look good for wintersowing. I have WSn Scabiosa, and they were easy. I've also WSn a couple of different Eryngiums, very easy, and perennials for me. I've found Delphiniums are easy to start with wintersowing, but watch them closely for bugs after they germinate- they evidently are quite tasty, LOL.
And your list reminded me- Oriental Poppies have been challenging for me, have never gotten one to germinate! I'll keep trying though.
Larkspur wintersow well, but be sure to transplant them when they're small. They do better when direct sown, but will transplant well if small. They're likely to be shorter when they've been transplanted, but are likely to reseed themselves. I find lots of seedlings in fall, that just hang on like troupers all winter long, then grow like mad when spring comes. I got mine started by wintersowing, but haven't needed to start any more since.
