A U.S.-supplied air-to-ground munition transformed into a ground-based strike weapon has been performing very poorly in Ukraine due to jamming and other factors, according to a senior Pentagon official. Though the weapon system in question has not yet been confirmed, there are strong indications that it could be the Ground Launched Small Diameter Bomb (GLSDB).
Sounds like it might have been a Patriots-in-Iraq kind of situation. There was an immediate need, there was an unfinished weapon still in development that fit the bill, it was pushed out while skipping late-stage work to get it available as soon as possible, and it had problems.
That does limit inexpensive options that can reach further than GMLRS. ATACMS can do it, but it’s only available in limited numbers and is costly.
It sounds like the ER GMLRS might be further along, but it’s only starting production, so there aren’t large stockpiles to draw from.