I don't know how these plants got here.

[IDunnoWhatThumbAmI]

These two different plants (or maybe just some kind of weed, I really have no idea) have been growing on the pot of my calamansi. At first I thought it was another calamansi plant growing so I just left it there, but as it grew, I saw that they were different. I am a beginner so I don't really have that much knowledge about gardening.
Here are the pictures:

I've already transferred them both in different pots so I hope that someone could identify them for me and maybe tell me if I'm what I'm doing is wrong.

 

[cpp gardener]

When they flower you will have a better chance at identifying them. So far they all look great, so you’re doing things right.

 

[Tetters]

We have been watching Gardeners World on the TV this evening @IDunnoWhatThumbAmI, and I`m now wondering if your plants are Chia ..... Salvia hispanica here`s a picture to compare -

if so, the flowers will be blue

Welcome to the forum by the way