Are the following sentences natural to a native ear?
1. In attendance were also John and Pamela.
Also in attendance were John and Pamela.
John and Pamela were also in attendance.
John and Pamela also attended.
2. Is there any further to come before this meeting?
I'm not sure what you mean. Do you mean "Do we need to go further [with a project] before the meeting?" or "Are any more people expected to arrive before the meeting starts?" or something else.
3. The fruit of our labor will hopefully come to bear this year.
Our labour will hopefully bear fruit this year.
Hopefully, we will see the fruits of our labour this year.