Interested in this as well, because I've been doing research on this and it seems like the ones that aren't banks you've heard of that have higher yields are more prone to playing games with your account (not adjusting your APR but instead keeping you on whatever and creating new accounts for the new plans).
Yeah a lot of the high yield savings accounts feel gamified where it suddenly feels a hell of a lot less simple than "savings account". More "high yield if ... <moving target>".