For Cesium support (tiling schema, LODS, outlines) see Cesium notes
In ArcGIS Pro 3.2 support for 3D Tiles is added (https://pro.arcgis.com/en/pro-app/latest/help/mapping/layer-properties/work-with-3d-tiles-layers.htm)
Sample: Use option ‘Data from path’ with https://geodan.github.io/pg2b3dm/sample_data/3dbag/sibbe/1.0/tileset.json
In QGIS 3.34 support for 3D Tiles is added see https://cesium.com/blog/2023/11/07/qgis-now-supports-3d-tiles/
To create 3D Tiles for QGIS use parameters ‘–create_gltf false –use_implicit_tiling false’ as 3D Tiles 1.1 features are not supported yet.
Sample dataset Sibbe https://geodan.github.io/pg2b3dm/sample_data/3dbag/sibbe/1.0/tileset.json
To create 3D Tiles for game engines use parameters ‘–create_gltf false –use_implicit_tiling false’ as 3D Tiles 1.1 features are not supported yet.
Sample dataset Sibbe: https://geodan.github.io/pg2b3dm/sample_data/3dbag/sibbe/1.0/tileset.json