Combined sensitivity to the neutrino mass ordering with JUNO, the IceCube Upgrade, and PINGU by Collaboration, I-G, Aartsen, MG, Ackermann, M, Adams, J, Aguilar, JA, Ahlers, M, Ahrens, M, Alispach, C, Andeen, K, Anderson, T, Ansseau, I, Anton, G, Argüelles, C, Arlen, TC, Auffenberg, J, Axani, S, Backes, P, Bagherpour, H, Bai, X, AB V, Barbano, A, Bartos, I, Barwick, SW, Bastian, B, Baum, V, Baur, S, Bay, R, Beatty, JJ, Becker, K-H, Tjus, JB, Benzvi, S, Berley, D, Bernardini, E, Besson, DZ, Binder, G, Bindig, D, Blaufuss, E, Blot, S, Bohm, C, Bohmer, M, Böser, S, Botner, O, Böttcher, J, Bourbeau, E, Bourbeau, J, Bradascio, F, Braun, J, Bron, S, Brostean-Kaiser, J, Burgman, A, Buscher, J, Busse, RS, Carver, T, Chen, C, Cheung, E, Chirkin, D, Choi, S, Clark, K, Classen, L, Coleman, A, Collin, GH, Conrad, JM, Coppin, P, Correa, P, Cowen, DF, Cross, R, Dave, P, Clercq, CD, Delaunay, JJ, Dembinski, H, Deoskar, K, Ridder, SD, Desiati, P, Vries, KDD, Wasseige, GD, With, MD, Deyoung, T, Diaz, A, Díaz-Vélez, JC, Dujmovic, H, Dunkman, M, Duvernois, MA, Dvorak, E, Eberhardt, B, Ehrhardt, T, Eller, P, Engel, R, Evans, JJ, Evenson, PA, Fahey, S, Farrag, K, Fazely, AR, Felde, J, Filimonov, K, Finley, C, Fox, D, Franckowiak, A, Friedman, E, Fritz, A, Gaisser, TK, Gallagher, J, Ganster, E, Garrappa, S, Gartner, A, Gerhardt, L, Gernhaeuser, R, Ghorbani, K, Glauch, T, Glüsenkamp, T, Goldschmidt, A, Gonzalez, JG, Grant, D, Griffith, Z, Griswold, S, Günder, M, Gündüz, M, Haack, C, Hallgren, A, Halliday, R, Halve, L, Halzen, F, Hanson, K, Haugen, J, Haungs, A, Hebecker, D, Heereman, D, Heix, P, Helbing, K, Hellauer, R, Henningsen, F, Hickford, S, Hignight, J, Hill, GC, Hoffman, KD, Hoffmann, B, Hoffmann, R, Hoinka, T, Hokanson-Fasig, B, Holzapfel, K, Hoshina, K, Huang, F, Huber, M, Huber, T, Huege, T, Hultqvist, K, Hünnefeld, M, Hussain, R, In, S, Iovine, N, Ishihara, A, Japaridze, GS, Jeong, M, Jero, K, Jones, BJP, Jonske, F, Joppe, R, Kalekin, O, Kang, D, Kang, W, Kappes, A, Kappesser, D, Karg, T, Karl, M, Karle, A, Katori, T, Katz, U, Kauer, M, Keivani, A, Kelley, JL, Kheirandish, A, Kim, J, Kintscher, T, Kiryluk, J, Kittler, T, Klein, SR, Koirala, R, Kolanoski, H, Köpke, L, Kopper, C, Kopper, S, Koskinen, DJ, Kowalski, M, Krauss, CB, Krings, K, Krückl, G, Kulacz, N, Kurahashi, N, Kyriacou, A, Lanfranchi, JL, Larson, MJ, Lauber, F, Lazar, JP, Leonard, K, Leszczyńska, A, Leuermann, M, Liu, QR, Lohfink, E, Losecco, J, Mariscal, CJL, Lu, L, Lucarelli, F, Lünemann, J, Luszczak, W, Lyu, Y, Ma, WY, Madsen, J, Maggi, G, Mahn, KBM, Makino, Y, Mallik, P, Mallot, K, Mancina, S, Mandalia, S, Mariş, IC, Marka, S, Marka, Z, Maruyama, R, Mase, K, Maunu, R, McNally, F, Meagher, K, Medici, M, Medina, A, Meier, M, Meighen-Berger, S, Merino, G, Meures, T, Micallef, J, Mockler, D, Momenté, G, Montaruli, T, Moore, RW, Morse, R, Moulai, M, Muth, P, Nagai, R, Naumann, U, Neer, G, Niederhausen, H, Nisa, MU, Nowicki, SC, Nygren, DR, Pollmann, AO, Oehler, M, Olivas, A, O'Murchadha, A, O'Sullivan, E, Palczewski, T, Pandya, H, Pankova, DV, Papp, L, Park, N, Peiffer, P, Heros, CPDL, Petersen, TC, Philippen, S, Pieloth, D, Pinat, E, Pinfold, JL, Pizzuto, A, Plum, M, Porcelli, A, Price, PB, Przybylski, GT, Raab, C, Raissi, A, Rameez, M, Rauch, L, Rawlins, K, Rea, IC, Reimann, R, Relethford, B, Renschler, M, Renzi, G, Resconi, E, Rhode, W, Richman, M, Riegel, M, Robertson, S, Rongen, M, Rott, C, Ruhe, T, Ryckbosch, D, Rysewyk, D, Safa, I, Herrera, SES, Sandrock, A, Sandroos, J, Sandstrom, P, Santander, M, Sarkar, S, Satalecka, K, Schaufel, M, Schieler, H, Schlunder, P, Schmidt, T, Schneider, A, Schneider, J, Schröder, FG, Schumacher, L, Sclafani, S, Seckel, D, Seunarine, S, Shaevitz, MH, Shefali, S, Silva, M, Snihur, R, Soedingrekso, J, Soldin, D, Söldner-Rembold, S, Song, M, Spiczak, GM, Spiering, C, Stachurska, J, Stamatikos, M, Stanev, T, Stein, R, Stettner, J, Steuer, A, Stezelberger, T, Stokstad, RG, Stößl, A, Strotjohann, NL, Stürwald, T, Stuttard, T, Sullivan, GW, Taboada, I, Taketa, A, Tanaka, HKM, Tenholt, F, Ter-Antonyan, S, Terliuk, A, Tilav, S, Tollefson, K, Tomankova, L, Tönnis, C, Toscano, S, Tosi, D, Trettin, A, Tselengidou, M, Tung, CF, Turcati, A, Turcotte, R, Turley, CF, Ty, B, Unger, E, Elorrieta, MAU, Usner, M, Vandenbroucke, J, Driessche, WV, Eijk, DV, Eijndhoven, NV, Santen, JV, Veberic, D, Verpoest, S, Vraeghe, M, Walck, C, Wallace, A, Wallraff, M, Wandkowsky, N, Watson, TB, Weaver, C, Weindl, A, Weiss, MJ, Weldert, J, Wendt, C, Werthebach, J, Whelan, BJ, Whitehorn, N, Wiebe, K, Wiebusch, CH, Wille, L, Williams, DR, Wills, L, Wolf, M, Wood, J, Wood, TR, Woschnagg, K, Wrede, G, Wren, S, Xu, DL, Xu, XW, Xu, Y, Yanez, JP, Yodh, G, Yoshida, S, Yuan, T, Zöcklein, M, Members, JUNOC, Bezerra, TJC, Birkenfeld, T, Blum, D, Bongrand, M, Cabrera, A, Cheng, YP, Depnering, W, Dötterl, O, Enqvist, T, Enzmann, H, Genster, C, Grassi, M, Göttel, AS, Hackspacher, P, Hagner, C, Han, Y, Heinz, T, Kampmann, P, Kuusiniemi, P, Lachenmaier, T, Loo, K, Lorenz, S, Lubsandorzhiev, B, Ludhova, L, Malyshkin, Y, Meyhöfer, D, Miramonti, L, Müller, A, Oberauer, LJN, Pilarczyk, O, Rebber, H, Sawatzki, J, Schever, M, Schweizer, K, Settimo, M, Sirignano, C, Smirnov, M, Stahl, A, Steiger, HTJ, Steinmann, J, Sterr, T, Stock, MR, Studenikin, A, Tietzsch, A, Trzaska, WH, Viaud, B, Volpe, C, Wang, W, Wonsak, BS, Wurm, M, Wysotzki, C, Xu, Y, Xuefeng, D, Yermia, F