Which of my 7 ex-friends should i contact back?

I have had 16 close, very close and somewhat close friends over the course of my life. Im currently friends with only one of them. I can only contact
6/7 of them 2 by phone and 4 by facebook. Which one should i contact? Or which should i contact first?
Thanks.

 

Well the thing is that im a shy person and most if not always the other one starts the conversation
Except with Pastor Ignacio lately which im the one who starts.

 

Emily(cousin) replied (last night) to one of my artworks (on Facebook) saying they were good but didnt seem to want to catch up with me or know how i was doing, nor did she tell me how she was doing.(She moved very far from me to another country)

Efrain (former college friend) replied to to me(facebook) saying he was in North Carolina(far from me too) working as a graphic artist.(the only thing we talk about) didnt answer some personal questions but asked my number to text me.

Cristian(former church friend)
Just answered my friend request on Facebook.

Mirelys (former college friend)
Wrote to her Facebook last night but hasnt answered as always.

Amada i have yet to call her, hope her number is still in my phone.

Rick(cousin) replied to me (facebook) saying he was doing good but didnt share details.

 

I disagree with all due respect.
I think i have to build a stronger relationship with them for them not to clam up. It dawned on me that i think.