Hmmm, this is a tricky one. Out of the more prominent sound formats that appear in the second generation games, I feel like we have soundbanks (worm voices) the most explored, apart from obviously the Wormsongs themselves. Fanfares in particular might be among the least looked into...
There have been occasions I recall, especially with the background music tracks in Worms 2 and Armageddon, where people over the years have identified similarities with music from other artists, sometimes outright samples from notable libraries of the time, but I don't remember anything similar ever happening with fanfares, personally.
One thing you could do is look for interviews with Bjørn Lynne aka Dr. Awesome, the lead sound designer on most Worms games. There's some very old ones floating around out there on the internet, and maybe some of them go into more detail on his creative process at the time. Here's a couple I found myself reading pretty recently that don't, but they're kinda interesting anyway:
http://wa.worms2d.info/main.html?page=abou&area=thet&inte=bjor
http://dream17.abime.net/viewpoint_interviews.php?id=2
And here's some video interviews and other things that might potentially reveal some details, or at least point you in the right direction:
https://www.youtube.com/watch?v=S03tkpDspfA
https://www.youtube.com/watch?v=rcyHqJ6ZHXs
https://www.youtube.com/watch?v=Yemm3fkfars
https://www.youtube.com/watch?v=LxgpCn9RLUk
Good luck!
There have been occasions I recall, especially with the background music tracks in Worms 2 and Armageddon, where people over the years have identified similarities with music from other artists, sometimes outright samples from notable libraries of the time, but I don't remember anything similar ever happening with fanfares, personally.
One thing you could do is look for interviews with Bjørn Lynne aka Dr. Awesome, the lead sound designer on most Worms games. There's some very old ones floating around out there on the internet, and maybe some of them go into more detail on his creative process at the time. Here's a couple I found myself reading pretty recently that don't, but they're kinda interesting anyway:
http://wa.worms2d.info/main.html?page=abou&area=thet&inte=bjor
http://dream17.abime.net/viewpoint_interviews.php?id=2
And here's some video interviews and other things that might potentially reveal some details, or at least point you in the right direction:
https://www.youtube.com/watch?v=S03tkpDspfA
https://www.youtube.com/watch?v=rcyHqJ6ZHXs
https://www.youtube.com/watch?v=Yemm3fkfars
https://www.youtube.com/watch?v=LxgpCn9RLUk
Good luck!