I’m not a student of legalese, but it doesn’t sound like Ohio is on board. Please correct me if I am wrong
https://www.cleveland.com/open/2020/12/ohio-ag-dave-yost-opposes-texas-lawsuit-challenging-biden-win.html
https://www.sfgate.com/news/article/GOP-led-Ohio-joins-Trump-effort-to-overturn-15792286.php