My previous ones have all been male
I don't know if this is true of most females, but Ember is less territorial than the males were.
The cat before Ember was Leo, an orange male tabby. He was so affectionate that I nicknamed him Mr. Love. But he was also very territorial. If he was curled on the couch end whee I usually sat, he would not budge. He pushed back at any attempts to move him.
There is one kitchen chair where I often sit when reading a book or posting online. It's more convenient than my desk chair since the desk is cluttered. Also close to the fridge for snacks.
When I was away from that chair, Leo used to curl up on it. When I returned to the chair, he wrapped his paws around the seat to avoid being moved. Sometimes when I was seated there, Leo decided that it was his turn to have the chair. He would jump onto it behind me and push hard against my back with his whole body, trying to dislodge me.
When he lost that battle for the chair, he just sat on a chair that was at the end of the table and perpendicular to mine. Then he reached a paw under the table to touch my leg, as if to confirm that we were still friends.
Ember is just the opposite. When I approach the couch where she is spread out she immediately leaps down to yield it to me. Same with the chair.