Note: This list is purely subjective. I only list ships that I'm into, meaning I won't disclose my NOTPs, and I ship m/m pair most of the time.
a. Holmes x Moriarty (no reverse); b. Salieri x Amadeus (no reverse); c. Daybit x Tezcatlipoca (reverse OK)
a. Patriot x Hellagur; b. Hellagur x Wuyou (purely aesthetic ship)
a. Barton x (canon) Navigator
a. Fukumoto x Tazaki; b. Wolfe x Yuuki