There should be hundreds of complete runs with replays you can find here. Adding a small handful of incomplete runs by asking here won't improve your dataset by very much

Pretty much every run on the site, especially top runs, has a save linked which contains a replay file.

has anyone ever completed a game on default without killing a single biter in any time period?

@RItmit Factorio speedruns, including Space Age, are ranked by real time, not ingame time.

As a general rule, we don't make leaderboard categories for modded speedruns because they are not official content and usually don't get enough widespread interest. That being said, feel free to make up your own rules and complete some runs with a randomizer mod of your choice, and post your times either in a forum thread, or in the community discord, here: https://discord.gg/antielitz