In the standard case of sahih li-ghayrihi, what is the original isolated chain’s grade?

Hasan li-Dhatihi, Sahih li-Ghayrihi, and al-Tirmidhi’s Composite Terms

• Hasan li-ghayrihi, already fully accepted through this lone chain
• Sahih li-dhatihi, even without full precision
• Hasan li-dhatihi
• Mildly weak, not yet at the acceptance threshold