When it comes to JRPGs + WRPGs, PSX had the best stuff by far for me; SNES is a close second, thanks to tons of JRPGs. PSP/DS had quite a few interesting, niche Japanese exclusives and a lot of good action RPGs in particular. Switch is a port machine; it has just about everything in one place. GBA has Mother 3, that alone elevates it above the next few for me, plus Golden Sun, many anime RPGs...; Mega Drive/Genesis has some really great WRPGs/ports (Starflight, Pirates! Gold and Shadowrun), but I don't like its JRPGs that much (except for Phantasy Star 4), so for that reason it's number 8. GB has the Saga games, some interesting JP exclusives like God Medicine etc. Many franchises I like started on NES/Famicom (Dragon Quest, Final Fantasy, Metal Max) and it had many weird, experimental RPGs too, hence number 7. Game Gear had Madou Monogatari, Defenders of Oasis, Moldorian and Royal Stone, for that I decided to place it at number 10.
I don't know PCE-CD (Turbografx-16/CD) well enough to assess it. I've only seen it a couple times/never knew anyone who owned it, it's like a ghost system where I live. I also disliked the voice acting from what I've heard, but I guess it probably could end up in the top 10 if I knew more about it, especially the JP exclusives.