First seed has all basic biomes and many rares near spawn except mega taiga. However it has a Woodland Mansion decently close. Also has two new bamboo jungles nearby. Only downside is that secondary Woodland Mansions are stupidly far away.
Second seed is amazing but sadly more imbalanced with too much ocean and less temples or rare biomes. Spawn is on an island surrounded by a massive warm ocean with coral reefs, mesa, jungle, ice biomes, and a mushroom island extremely close. Only downside is frozen ocean, bamboo jungle, and mega taiga are a little bit farther away, but at least grouped up. Than the insane thing is that three Woodland Mansions are all 3500 blocks from spawn.
Found one of the best ones yet. All biomes are 3000 blocks within spawn with a woodland mansion with hidden spider spawner room 500 blocks from spawn. Also includes a big warm ocean biome with village on island and secondary Woodland Mansion 4000 blocks from spawn for those who don't want to bother ever looking for more than two.
This one is absurdly good too. The spawn has an insane sheer different amount of biomes all packed together. All basic biomes including Savanna Plateau M, Ice Plains Spikes, and Bamboo Jungle are all 2400 blocks from spawn. The Northeast and Southwest both respectively have massive hot (for pyramids with possible enchanted golden apples) and frozen biome clusters. To top it all off there's a Woodland Mansion near spawn with a decent amount of 3 evokers (opposed to a cruddy 1 in two other seeds), a diamond block, and an enchanted golden apple in one of the chests.
In addition, all basic biomes except frozen ocean and bamboo are extremely focused around -1024,1024
Has all essential biomes 2000 blocks from spawn. Also includes Bamboo Jungle, Savanna M, and Ice Plains Spikes. Only exception is Mesa which is only 2400 blocks away with a 400 block difference in a straight line with no increased distance from being diagonal. Woodland Mansion is also only 2200 blocks away with all 4 different Evoker rooms and a secret room. The single downside about this seed is that the nearest Jungle Pyramid(which has bad loot normally anyway) is 4700 blocks away. Spawn is also oddly almost right at (0,0), and a Nether Fortress path is right under spawn with nether wart 120 blocks away.
Ice biomes, Mountains, Warm Ocean, Jungle, a big Sunflower Plains, and a Mushroom Island make the spawn seem phenomenal and unique.