I suppose the one on our right represent Gautama Buddha -- I say that because of the hairstyle, see Why this hair style on statues of the Buddha?
He's holding a lotus (Padma).
The elongated earlobes are also among the physical marks of the Buddha -- Did the Buddha have long ears?
The clothes, bases, heights (and so on) match -- they're a matched set -- I can't identify any other symbols on the clothing or base.
Perhaps they're made as a pair, rather than elements of a once-larger set.
I don't recognise the personally-identifying symbolism of the statue on our left (perhaps someone else will). Assuming that:
- They are a pair
- The one on our right is Gautama Buddha
- The one on our right is not obviously greater, grander, more venerable than the one on our left
... then I presume the one on our left is no less than a Buddha too (and is not e.g. a mere attendant).
Some schools of Buddhism identify more than one Buddha (see e.g. the Medicine Buddha or the Five Wisdom Buddhas).
My guess, based only on the fact that there are only two of them, is that the second one might be Matreya (the Future Buddha) -- that would make sense as a pair, i.e. the previous and the future Buddha -- but I found nothing to confirm that those personal symbols represent Maitreya.
Another possibility, maybe, is that the second statue represent Gautama Buddha too. There's a beehive hair-style again. That appears to be an eight-petalled crown -- a lotus again which, like the Dharmachakra, represents the Noble Eightfold Path.
He's holding what appears to be a stupa. Could it be that the pair represent the Buddha before and after parinibbana? I don't know.
When you display them it may be respectful to put them in the highest place, above other things (see e.g. this answer) -- for example perhaps on top of a bookshelf, or on the top shelf.