Any of those funds would be a fine choice, as they should all be sufficiently tax-efficient. I currently have VTMGX as one of my two taxable funds, partly because it used to explicitly be a "tax-managed" fund, but eventually Vanguard said, "eh, this other non-tax-managed fund basically has the same tax characteristics, so we'll just merge 'em". And yes, I do get a foreign tax credit, but that's not the reason I hold it. There's probably some micro-level optimization that you can perform with that tax credit, but it can't be too big of a deal, otherwise we'd always hear "hold all your international in taxable accounts!", and we don't (nor do we hear the opposite).
No need to replicate your allocation in the taxable area, and even one fund might be enough. Tax consequences will make you less interested in moving things around in a taxable account, so for the lazy person it's easier to just hold one or two things forever in taxable, and then keep your allocation balanced by moving stuff around in your sheltered accounts.
I don't have any strong opinions on mutual fund vs. ETF. ETFs give me a vaguely icky feeling, so I only have mutual funds, but that might just be because I'm old.