I have a different RPG setup than you lot, because I tend to go more for odd content.
If you guys like the Disgaea series, Disgaea 5 Complete is well, Disgaea 5. I bought it more because it was $7 new, and I wanted a SRPG to go with the system.
I have Cosmic Star Heroine, and I'm about three hours into it. It's fully sci-fi, and if you liked Breath of Death VIII or Cthulu Saves the World, I say go for it.
There's Swords of Ditto: Mormo's Curse, which is a really good title if you like hack-and-slash Zelda-ish games. It has a permadeath mechanic, but everything carries over.
If you want to count quasi-RPGs, there's also Bloodstained : Ritual of the Knight and Hollow Knight. Both have RPG-ish mechanics as far as item collecting and leveling systems, but I'm a sucker for the traditional Metroidvania.
I played Archlion Saga on my phone. If it's still $3, grab it. Otherwise, wait for sales. It's quite solid, reminds me of a traditional Nintendo-era JRPG, but it's horrifically linear and super-short. meant to play in a sitting.
Doom and Destiny is LONG. Made by an Italian-based team, it's a love letter to everything RPG, and it shows. It's sequel, Doom and Destiny Advanced, is coming to the Switch at some point, and I recommend that over the original.
I ain't got nothin else. :w