Nice shit but your wrong in some parts....Multies are multi-syllabic rhyme schemes....It's like there's two different type of rhyme schemes: multies and I dunno tha name of tha other but I'll just call it singles, lol

....a....a//
....a.....a//

That's a single-syllabic-rhyme scheme cuz even though there are more than 1 syllables that rhyme, each syllable rhymes with each other....

....a.....b//
....a.....b//

That's an example of a multi-syllabic rhyme scheme. To be more specific, that is inner rhyming too.

........abc//
........abc//

That's tha double/triple rhyme scheme you were talking about, that is also another form of a multi-syllabic rhyme scheme...

Single-syllabic rhyme schemes and multi-syllabic rhyme schemes are like 2 branches of rhyme patterns. Then they branch off onto other shit like multies include inner rhyming and that double/triple shit you was talking about.....