I like the cobalt set best. I don't think of it as a flow-blue, but I was say that it likely is mid-century and suitable for LH. Dating it is tough because you see that blue sell well into the ate 1870s. The other ironstone with the gold decoration made me think of "tea leaf" knockoff patterns. Both have intersting handles, but I must say, that cobalt blue really talks to me, it's a sweet set.
The ironstone, it could fit in anytime from 1850 onward as the beauty of that style was universal. Any store could sell ironstone, and with little additions and decorations like you show here, it would be simple for anyone to slip a few cups like this onto the breakfast table without mixing up table patterns too drastically. In other words, if you have various sets of ironstone, changing out a few sets of ironstone with different decorations wouldn't have been unusual, and it was a cheap way to stretch a table pattern for a few more years.
Another thought too, it was common for folks to take worn dishes to a china mender. When the glaze gets worn on a dish, you could take them in, have cracks and paint mended, and the whole lot reglazed. Often, some folks took in parts of their ironstone for the same purpose, or simply update to a more modern pattern, consequently if your set doesn't have a hallmark on the bottom, it might have been a set done by a private artist or small business.
I hope that I've helped you some Elaine. A happy summer to you.