Question about IDing plants by their leaves

I have four Morning Glorys now. I only grew one. Three are wayward. All four have different leaves. I was wondering if theres a way to ID the plants by their leaves? Or do I need to wait until they bloom?

 

I was told that you had to wait for the bloom but I am still ver new!

 

Me too! LOL This is my second year! Ill wait until they bloom and see if anyone can id them in our new ID section!

 

Ok...I looked...LOL OK I have five types of morning glory!
I didnt know my Ipomoea was a type of morning glory! I learned something useful today. Thank you!