Raglan increase help!

I am currently working on a sweater on the raglan increase section (my size is the number that is first listed inside the brackets) and this is what the pattern says:

Repeat increase round every 4(4, 2, 2, 2) rounds 3(3, 5, 2, 8) more times and then repeat increase rounds every -(-, 4, 4, 4) rounds -(-, 2, 4, 2) times. Work even in st st until yoke measures 20.5(21.5, 23, 24, 25.5)

I have completed the increase round every 4 rounds for 3 more times however I assume the - means I no longer have to increase for my size but still knit until my work measures 21.5 cm. Is this correct? If so what effect will this have on the underarms by not increasing all the way?

Yes, that’s correct. No more increases after the 3 additional inc rounds (4 total inc rounds). For your size, that will be the appropriate size yoke and underarms.

What is the name of the pattern?