Unfortunately, none that are currently available. You see, Nvidia itself had completely discontinued all support for that GPU and all other Fermi GPUs way back in 2018. In March of that year, the very last driver for that GTX 550 was released.
And starting with Premiere Pro 13 (the 2019 version), newer GPUs were now required just to run Premiere Pro properly. The very last version of Premiere Pro that was compatible with that GTX 550 was versiuon 12 (CC 2018), which became unavailable through the Creative Cloud app as of May 2019, when Adobe began restricting older version availability to the one major version that was released prior to the current major version.