Yeah, the switches are the easy part if you're dealing with hotswap.
Most of the brands you mentioned are good. JWICKs must be incredibly cheap in China! Worth trying the T1 V2 just for pennies. Kailh would be more affordable there [it's overpriced here.] Most of those others are already cheap, now you can save more. KTT is very good, often.
There's a sale on at AliExpress BTW. Largest it will be for a while.
Yes, KBD67 Lite is cheap, especially there. I guess it's like the 'Honda Civic' of 65%, but honestly it is better than entry-level. It is mid-tier feel at entry-level price. And easily moddable. There probably are metal cases available for it somewhere, but that is the territory of its predecessor, the KBD67 MKII.
WS Switches are actually good because they are pretty decent even without lube. They have a silent tactile, but it is heavier than comparable offerings from TTC.
The best thing for you to do might be to get onto the discord for mechanicalkeyboards [the Reddit], where there are people who will know what to buy in China. Especially join the KBDFans discord, maybe KPRepublic, and especially Wuque Studio. There are people who can point you to exactly what to buy, where, when, what link, etc...