Sure, there are opinions. There is no standard teaching.
I’m sure this will raise the question “Well what is the majority opinion”,
the answer to that is that it changes depending on time and place.
At present I’d say the majority opinion (Although I’m not sure it is a very large majority) is that the Catholic Church doesn’t have true sacraments.
You don’t have to go back very far (one or two hundred years), and the majority opinion (from what I’ve read), was decidedly the other way. Go back a few more centuries, and you have opinion changing again.
It just isn’t important enough to us to bother with making anything official.
Another issue is of course, which sacraments do you mean, as people might have different opinions depending on the sacrament. An individual might accept you have true baptism, but nothing else, for example.