There are several brands in solvent based & a few in water base.
Some that I can think of at present
Solvent based,...... Ronan lettering (oil), House of Color (urethane ) several others I don't remember names.
Water based ,...... Ronan Aquacote lettering, Nova Color, Golden, of the 3 Aquacote is the easiest to letter with, Nova Color will last longer & works well on rough walls better & with proper additives letters easy. the Golden is more available & about same as Nova both made the same way all pigment.
I try to look up & remember other solvent based brand names for lettering & check in later.
Always hand paint