Peace:
There seems to be more words in the Quran that could be taken as names/attributes of the Most Merciful, since they describe powers that could not be given to anybody else, or are used to address Allah.
1st ٱلْمَوْلَىٰ Al-MaWLY : this word comes from the root W_L_Y, from which there are already two names in the 99 names list. (055 الْوَلِيُّ Al-Waly The Friend) and (077 الْوَالِي Al-Waly The supporter/ally). However, in verse 2:148,286, 9:51, and 22:78 appear another variation of this root. MaWLY, with translates as: one that makes turn, Protector.
2:148 وَلِكُلٍّ and for every وِجْهَةٌ face هُوَ He مُوَلِّيهَا MWLY-HA (one that makes her(it) turns/ her(its) protector)?
2:286 ? أَنتَ you [are] مَوْلاَنَا ? MaWLA-NA (one that make us turn/ our protector)
9:51 ٱللَّهُ Allah لَنَا to us هُوَ He مَوْلاَنَا MaWLA-NA (one that make us turn/ our protector)
22:78 وَٱعْتَصِمُواْ and you shall hold fast بِٱللَّهِ in(to) Allah هُوَ He مَوْلاَكُمْ MaWLA-KM (one that makes you turn/ your protector) فَنِعْمَ then excellent ٱلْمَوْلَىٰ AL-MaWLY (the one that makes you turn/ your protector)
So, name number 100 ٱلْمَوْلَىٰ AL-MaWLY The one that makes turn/ Protector. AL-MaWLY El que hace dar buelta/ Protector.
2nd ٱلنَّصِيرُ Al-NaSYR: this word comes from the root N-S-R which has meanings such as aid, help, succor, assist, tributaries of a river.
Surat 1:5 says, واياك and only you نستعين we are seeking for help.
2:286? فَٱنْصُرْنَا Fa-ANSR-NA then help us عَلَى over ٱلْقَوْمِ the people ٱلْكَافِرِينَ the unbelievers/ rejecters/ deniers.
22:78 ? وَنِعْمَ and excellent ٱلنَّصِيرُ The Helper.
So, name number 101 ٱلنَّصِيرُ Al-NaSYR The Helper/ one that succors. Al-NaSYR El Ayudante/ que da socorro.
3rd فَاطِرِ FATiR this word comes from the root F-T-R which has meanings such as split, bring out, and fashion.
30:30 فَأَقِمْ then set وَجْهَكَ your face لِلدِّينِ to the religion/ law/ way حَنِيفاً [as] a monotheist فِطْرَةَ fashion/ trend ٱللَّهِ Allah ٱلَّتِى * فَطَرَ fashioned ٱلنَّاسَ * men عَلَيْهَا over it(with)?
6:14? فَاطِرِ Fashioner ٱلسَّمَاوَاتِ [of] the heavens وَٱلأَرْضِ and the Earth..
So, name 102 ٱلفَاطِر AL-FATiR The fashioner/ designer. AL-FATiR El Dise?ador.
4th رَبِّ it is said that it comes from the root R-B-B having meanings such as lord, to have possessions, to raise, to educate, to approximate. This word, it is used by many people in the stories of Quran to call/address God, and in the beginning of recommended prayers. Since, [7:180]"And to God the Most Beautiful Names, so call Him with them,.
2:260 وَإِذْ and when قَالَ said إِبْرَاهِيمُ Abrahym رَبِّ Lord أَرِنِى show me?
Then name 103 ٱلرَبِّ AL-RaB The Lord. AL-RaB El Se?or.
The ignorants claim that there is no purpose of knowing this, and they laugh and make jokes. Let them laugh they will come to know. These names/ attributes are important to know, so that we can avoid association (Shirk), or avoid profaning them. The perverted Muslims are naming their children after this names, their leaders, their organization, groups, God knows, maybe even their dogs.
May God increase our knowledge and give us wisdom.