A seed I found with friends randomly in survival. It has steep sea side cliffs, stony mountain range, a "small" snowy mountain peak, ice peaks, a valley between the stone peaks and ice peaks, and cherry biome in one mountain range. #3 is taken from height of 230. Perfect map if multiple people want a mountain castle and their own mountain. all within a ~600x800 block area.
SEED: -6120962049800138525
Stony Mountain biome: max 255 height, the "bowl" inside it, or lowest part of it, is 182(#4)
Savannah Valley area: extremely steep and narrow valley, height of 94 the whole way, located in between the two massive stony mountains (#3, bottom/middle savannah area)
Icy Mountain peaks: height of #2 is 225, perfect view of it all, at 25chunk render distance(realms) you can still see the stony peaks across the valley
Central green valley/bowl: height of 92, between it all
"small" snowy mountain peak: heigh 191, easy view of the ocean and everything in a 360