It's curious, it seems that no one could help me identify the last plant... Well here's the other one. Same situation. I planted a seed and have no ides what it was I planted. We reused some of the cells of the seed starter and this doesn't match what the charts say. It likes the wet soil and seems to have a very hard stem on it, not a vine.
It's already split into two parts and each has new leaves forming from them so it may be a shrub or vegetable that has to grow fairly tall. This isn't a low grower.