It doesn't help that the "Right-to-Work" language really works against the union cause.
Even in an Agency Shop in non-right-to-work states where there is a union security agreement in place, a bold, self-reliant individual can approach his employer and say "I am more talented these folks and I don't have clear and identifiable "community" interests with them and I demand that I don't be considered part of the bargaining unit in collective bargaining negotiations and would like to bargain for my own contract."
In every state you already have the right to bargain for your own separate contract outside of the union contract even if there is a union security agreement that requires non-union members to pay agency fees if they're covered by the union contract. You can't have union security agreements that require all employees, even those not covered by the contract, to pay agency fees because that would be a closed shop and those were outlawed when Harry Truman was president.
It seems to me to be a bit ironic that people invoke freedom of contract to make it illegal for employers to enter into certain types of contracts (union security agreements)

Maybe a better approach might be to amend the the NLRA to require employers to post notices in shops with unions that tell employees that they have the right to approach the employer to bargain on their own behalf
Thus, the "right-to-work" language is incorrect but it seems to be effective politics.
It looks like the strategy of trumping the "right-to-work" works better than framing it as making collective bargaining illegal for certain groups (i.e. SB5).
I expect Ohio will follow suit.