Al Stewart’s classic Year Of The Cat song starts with a left-channel piano intro before full stereo kicks in after a while.
My current bedroom has a single original HomePod. When played through that speaker, it initially has left-channel bias. When the right channel kicks in, the audio becomes fuller and more balanced. Impressive performance for a single speaker. I haven’t tried the effect from another part of the room because it’s too cold to get out of bed.