All of the footprints you've added are valid. Their shape however, could be more accurate. Please place nodes in the corners of buildings accurately (enough), tag the area as a building, then press 'q' to square the footprint. The resolution of ESRI in this area is not the greatest but, these buildings appear to have 'square' footprints in reality. I recommend that you use Mapbox imagery in this area to help determine the shapes of buildings where possible and to zoom out to better see the shape of features before zooming in to accurately draw them. Thank you for your contribution!
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            Published using OSMCha: https://osmcha.org/changesets/158240891
            