Nope, most states require either a certain percentage/number of registered voters for a party or a state-wide petition to get onto the ballot. The only 3rd party on all 50 states’ ballot is the Libertarian party. The Green party is a distant 4th place, as they often need to regather signatures and new petitions every 2-4 years.
If a new party was formed for 2028, it might get enough ground in one state, not any to really sway the balance of the Electoral College.