Participants (provisonal, 9.3.2023).
Elo FIDE Rapid, if nothing else is indicated:

GM Mihajlo Stojanovic, 2569
GM Christian Bauer, 2563
GM Igor Khenkin, 2518
GM Spyridon Skembris, 2374 Std
FM Aurelio Colmenares, 2337
FM Gabriele Botta, 2326 
FM Fabrizio Patuzzo, 2299
IM Valeri Bronznik, 2274 Std
FM Nikolaus Pogan, 2184
Vladimiro Paleologu, 2244
Shkelzen Murati, 2053
Lindo Duratti, 2187
Milan Bijelic, 2093
Jan Steenhuis, 2088 Std
Jonathan Grept, 2031 CH
Emin Emini, 2004
Eddy Beney, 1932 Std
Armin Rauer, 1900 Std
Zeljko Bijelic, 1861 b
Beat Binder, 1850
Aliji Nedzat, 1818
Peter Wyss, 1799
René Tabin, 1796
Alex Günsberg, 1700
Fernand Pellaton, 1699 Std
Zivan Simic, 1698 CH
Marco Audino, 1678
Eric Bayard, 1641 Std
Jean-François Carron, 1607 CH
Claude-Alain Bonvin, 1600 CH
Max Chappaz, 1576
André Vögtlin, 1557 Std
Marco Volken, 1525 CH
David Mazza, 1513 CH
Yves Balet, 1494 CH
Dimitri Gaspoz, 1352
Luc Udry, 1329 CH
Alessio Caroli-Gordillo
Dimitri Bartlome
Aurélie Briguet
Corentin Thébault-Ruiz
Silas Graber