VR1. Mineral or full synthetic

Muswagon said

Mineral VR1, even Hot Rod oil from Lucas, but not synthetic. Just because a cam is broken in does not mean that it will not have critical failure without the barrier than ZDDP provides as it wears.

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Lucas Hot Rod oil contains ZDDP far in excess of levels proven to cause pitting and spalling in metals. This has been known for decades. The 1400 ppm in the VR-1 is right at the maximum level that balances anti-wear protection while avoiding potential damage from too much ZDDP.
Except for cost, which the OP has said isn't a factor in this particular case, fully formulated oils blended using primarily synthetic base stocks will out perform those made of mineral based oils in virtually every meaningful way.