Salaam Hala and Salam to everyone
Hala I will try to provide back up for your writings on concept of Beauty, so this will be in several pieces and kinda sloppy.
Hadith you quoted:
Inna Allah (is) beautiful and loves the beauty, said the Prophet.
الجامع الصغير – لجلال الدين السيوطي
المجلد الثاني >> [تتمة باب حرف الألف]
1720- إن الله تعالى جميل يحب الجمال
التخريج (مفصلا): صحيح مسلم والترمذي عن ابن مسعود الطبراني في الكبير عن أبي أمامة الحاكم في المستدرك عن ابن عمر، ابن عساكر عن جابر وعن ابن عمر
تصحيح السيوطي: صحيح
Inna indicates that this Beauty of Allah is the very shape of the universe which shapes all things that are beautiful.
Shah Ni’ma-tu-Llah said: Jamal (Beauty) is the Tajalli (Lucent Manifestation) of Allah towards Allah and for Allah. 
This means that Allah loves to see ITs own beauty and loves to show ITs own beauty to ITself. All other forms of beauty (and pleasures of exposure to beauty) are borrowed from Divine Beauty, infinitely vitiated of course. Gold in its purest form could not be used for jewelry making since it is too soft and needs to be alloyed with impurities. As such for Divine beauty to be seen by other than Allah needs to be alloyed with impurities then it is beautiful in our eyes, else no eye could behold its purest form. Those ‘impure alloys’ are the beautiful things other than Allah.
Irfani (Gnostic) definition of Beauty: Emergence of perfection (Kamal) of the beloved, to render beloved’s needlessness of lover!
Note: Jamal (Beauty) and Kamal(Perfection) are one letter off i.e. Jim for Jamal replaced by Ka for Kamal, in the language Arab indicates conceptual relatedness.
If you could cognize the needlessness of Allah from all things, then you suddenly see the purest forms of Allah’s beauty. If you could not fathom Allah’s needlessness e.g. thinking Allah needs you to do something charitable or religious, then you see nothing of Allah’s beauty, only your own Nafs’.
 Sajaddi: Farhang-e Istilahat Irfani