I only really know females of these types (minus my LSE dad) so that's who I'll talk about.
ESE's exude a more organic warmth, whereas LSE's exude more of a crisper, sustained bubbliness, from my point of view.
A lot of LSE women use Fe-role very much and it comes across like they are super excited about everything, whereas ESE women have smoother transitions between their emotions.
If you pay attention to the content of LSE's speech they are often constantly asking about things like "How did you make that dish?" "How many people are already enrolled in this class?" "So your purpose for coming here primarily is to meet more people?" "How are you going to get to location b on Sunday- do you need a ride?" They also take a lot of pride in finagling something in a creative way using Te, so they will tell stories in which they did something using a strange method and cut steps but it came out fantastic, etc. Or proudly say things like, "I came to this party bringing just the wine I had left over in my house... it needed to be drunk anyway! So actually I didn't purchase anything!" Or, "I know the department gives us funding to go to [conference in April]. I think we could just apply for the money and then use it to take a small vacation... I've been thinking about inviting you guys to my childhood home."
ESE's are a bit more...alpha flavored I guess. They are a bit more likely to spend more time talking passionately about "frivolous" things like clothes and Miyazaki movies and be not averse to sci-fi/ fantasy. They can sometimes use Te-role a lot too, but you know that at the end of the day they're reading and responding to emotional signals. Sometimes they get overly emotional and I ignore them by withdrawing into what I consider "pure Si" mode until the mood passes. Conversation topics revolve more about people, friends, their jobs, etc, than larger societal trends that cause a economic shift with bad humanistic implications or whatever- more SF type topics. Even for so-firsts, it seems that you still focus on these "people" topics just on a larger scale.
LSE's often come across to me as "cool and hip" whereas ESE's come across more as "girlish and interpersonal." To me LSE's come across as having a more classically "boyish" air or a mix of feminine and masculine qualities whereas ESE's are classically feminine.