In case you haven’t been welcomed elsewhere…welcome to HFGF! Honestly, I’m not sure too many have heard all of what you’re asking about to be able to speak to comparisons. Are you focused mostly on the G111 for Lake People, or were there other models you were considering? There’s a detailed write-up comparing the G111 to the RNHP here
I haven’t heard the Erish or G111, but I think the Erish would struggle to compete with either the G111 or RNHP unless you’re specifically looking for balanced.
I think what you get with RNHP is clean sound, pretty neutral without being dry, and with great spacial recreation in its price range. The G111 gives a bit more power and maybe a slightly more aggressive attack in presentation. The CMA400i is more laid back and smooth, slightly warmer. The Erish is a bit more clinical leaning in signature, IIRC, and high price to performance value.