Sort order on default Records view - Records with same name, what is the second field use

just to know, Have you provided different plural names for record or even those are same for both of them?

Sorry i put it in a wrong way, Ignore my previous comment. Could you please try keeping different designer names to them and check once?

If the records having the same name then they sort on the date created or imported. And please be noted that the record type names are case-sensitive when sorting the records.

I'm sorry raitejavj I do not understand what you mean on your second post. For the first one, yes they are identical (name and plural for both records / environments)
naresh930 - Thanks for the answer, if it dépends on a date (creation or import), there is no control over it once it is done!
It makes sens, this environment have not been created at the same time than the others, therefore, objets creation and the whole initial migration might have been slightly different.
Thanks again!

@martinm359 No worries! Good to know these kind of controls.