A class. puzzle

These three parts are in correct order but can be solved independently. Two of them are initials and one is an anagram name. The answer to this puzzle is... well, you'll notice :)

Good luck!

For the colorblind. The colors are (row by row):

Blue, Grey, Red, Black, Green

Brown, White, Indigo, Yellow, Orange

• In part 2, should the sixth icon in the list have one fewer bar around it? Thanks.
– Stiv
Jun 7, 2021 at 19:45
• @Stiv I am highly impressed. (I'd solved 1 and got stuck on 2 in the obvious place; with your suggested correction indeed 2 is clear as is what 3 must be, though I haven't yet figured out why. But since you haven't just posted an answer, it seems you figured out what 2 must be with at most one of 1,3, which I find very impressive indeed.) Jun 7, 2021 at 20:11
• (I have a way to get the right thing out of 3 but I am pretty sure it's wrong because it doesn't use everything in the image.) Jun 7, 2021 at 20:12
• @GarethMcCaughan Ha, thanks :) I actually figured out 2 first, then back-solved 1! I'm stuck on 3, same as you though - although like you I'm sure I know what it should be...
– Stiv
Jun 7, 2021 at 20:39
• I confirm that your not-entirely-satisfactory answer to 3 is the same as mine :-). Jun 7, 2021 at 21:16

The answer to this puzzle is:

W. AMADEUS. M - a famous class(ical) composer.

Puzzle 1:

To solve this, note that FRA and GIN are:

3-letter country abbreviations for France and Guinea. These two countries have triband flags, France's being blue-white-red and Guinea's being red-yellow-green. If we join these coloured dots in this order, we see a 'W' traced out:

Puzzle 2:

The moon and sun icons here have connotations with:

Monday and Sunday (these days of the week are named after them). Note then that beneath these symbols we have seven rows of boxes. Moreover, the number of boxes in these rows correspond to the number of letters in the names of the seven days of the week in English.

Note next that each 'thumbs-up' bullet point is surrounded by a number of bars. Count these up and index into the corresponding day of the week to extract a letter. This yields:

MONDAY, TUESDAY, WEDNESDAY, THURSDAY, FRIDAY, SATURDAY and SUNDAY.

Together, this gives the letter set MSEUDAA, which is an anagram of AMADEUS.

Puzzle 3:

This is a rebus of sorts that requires a few steps to it:

Here, 'Pr' represents 'prime'. The 9th prime (indicated by the substring '9') is 23. The 23rd letter of the English alphabet is 'W', and rotating this 180 degrees (as suggested by the arrow) turns our 'W' into an 'M'.
This explanation clarified in comments by the OP, below, following my initial chemistry-connected suggestion neglected to use a part of the rebus.

• Aaah mistake there, it should of been seven bars ofc! As for the 3rd image, rot13 (zl vagragvba jnf gung vf ercerfragrq gur 9gu cevzr, juvu vf 23. Gur 23eq yrggre vf J, ebgngr 180 naq jr trg Z.) Jun 8, 2021 at 5:57
• @Primenumbah Ah, I see - I got sideswiped by chemistry again! Will amend my answer. Feel free to fix the image if you like and I'll fix up my text afterwards to match...
– Stiv
Jun 8, 2021 at 6:04
• It's fixed now. Jun 8, 2021 at 6:31