The footprints you added are all valid and appropriately squared but generally oversized, sometimes becasue they include the shadow in the footprint. Pitched roofs tend to overhang the walls so is more accurate to map them a touch smaller than the roof. If features are very close together this can lead to the not being enough room to fit them all. See how I mapped these in Changeset: 164916703.
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            Published using OSMCha: https://osmcha.org/changesets/164174782
            