Hype is probably the closest, but it’s different to Retro Synth.
There could be new synths coming to the MPC this week that’ll increase it’s standalone capabilities… but overall, it’s best seen as a sampler/workstation, it’s synth engines aren’t really what it’s about. They’re ok, and they’re as good as you make them. Meaning, there’s a LOT of processing power where you can resample and work on sound design outside of the plugin synths themselves.
I think Solina, Odyssey and the Mellotron are all really good sounding without much effort.
Personally I find Hype, well, too ‘hyped’ sounding and don’t think I’ve ever used it in any music.