Telling bush tomatoes from cordon varieties

While I was abroad, the postman delivered 9 tomato plugs.
3 Lizzano (a bush variety), 3 santorange (cordon) and 3 aviditas (again cordon, a pretty robust and large variety which I have grown last year).

Because it would have been days until my return, my wife did me the favour to pot them for me. She kept each variety separated, but she does not remember which is which.

I called Sutton's, to ask if they perhaps had photos online of the three varieties as plugs, but they said that they all look the same anyway (this is not strictly true, I think, but anyway..) and suggested to avoid pinching them and let them grow as bushes until the difference in size and shape becomes more evident.

I am slightly worried I might end up with bushes in my raised bed and 7 feet cordon plants in my planters

Any advice about how to tell them apart?
I could post some photos if that helps.

Thanks for any advice
Aldo

 

Ensuring they get as much light as possible (plus some space around them) should encourage the natural low, branching habit of a bush tomato, plus discourage them from growing tall and leggy, making them easier to distinguish from cordon varieties.

 

Thanks!
I do not have much space indoor and no greenhouse, but I think you are right, that is my only chance.
I will transfer them all in larger pots and give them plenty of sun.

Hopefully, I will be able to tell them apart eventually. It is a pity because I had all my limited planting spaces planned out and it would really help to know which is which.
Before leaving I prepared the soil and pots, but I forgot the most important thing!
We live to learn I guess..