The text are only stored on the phones so you would need to be in possession of the

phone to check texts. My Tmobile will only give you the numbers that the text are being sent to and from.

I need to check text messages on another phone on my plan.

If you want to see content you’re going to have to gain possession of the phone with the passwords.

If you want  to just see usage you can check your MyTmobile account. 

I have all the devices but I need all messages to deliver to my iPhone, not my iPad Pro and air iPad 

I want all text messages to come to my iPhone 14 pro max and not to my iPad Pro and iPad Air. I always have I phone with me when the messages go to my iPads I do not see them on my phone so I miss text messages

Digits.

https://www.t-mobile.com/offers/t-mobile-digits