Yeahh, general consensus around here seems to be that WFP is primarily used by the DNC to elect Dems under another name to get around certain jurisdictions that don't allow a single party to hold every seat:
https://www.cbsnews.com/philadelphia/news/working-families-party-philadelphia-city-council-elections-republican-democrats-2023/
Our DSA chapter is running someone for state rep as an independent socialist ( https://brittanyforri.com/ ) and about a month and a half after that campaign launched WFP told us on a call that they were still considering running someone against us. Which would have probably split the progressive vote and kept the corporate nepo-baby Dem in office. Thankfully it seems like they couldn't find anyone willing to do that! (And this is the kind of race where there's often only a single candidate on the ballot...)