SLE (ESTp), their words often come across as too positive to be true and I sometimes get suspicious of their assertions and promises even though they can be very clear about what they intend; and
LSI (ISTj), we seem to understand each other although we're usually interested in and express opinions about different aspects of the same thing. I usually have to be careful in what I say because, like ESTp, they're so literal.
I don't think Betas share much commonality in communication because their preference priorities are different.
a.k.a. I/O