I also don’t have names for any of them so if you guys have any suggestions, I’m all ears.
Business mare Pinkie: BM is the ‘eldest’ of the group and is the one who proposed moving from Ponyville to live their lives. She took the reins when she saw how things were going in Ponyville and convinced the others to come with her. Due to her quick thinking and pinkie sense (hers only senses danger), the five of them escaped before the mane six rounded them all up. As the ‘eldest’, she initially tried to take care of everyone at first, getting a job in a office firm. She very quickly learned not to play around after being fired from several places before landing the office job. Her time in the business world made her very jaded and cold, now using her pinkie sense to get a read on clients and partners so as to not get stabbed in the back. She has worked her way up to a high position but has lost the connection she once had with her ‘sisters’. Their monthly meeting is the only time she sees them and she is usually pretty happy at those times.
Note: She’s grayed out due to stress and a generally sour personality. She also has grey hairs because of the same reason.
Celeb Pinkie: CP is the third eldest and the most out going. After watching BM kill herself to make ends meet, she wanted to try her hoof at working but found it too confining to work for others in that way. Moreover, she wanted to be around others in a way that she couldn’t do flipping hay burgers. So she went out to become an actress. At first, she had a hard time, her trusting nature being used against her often until she was left with nothing. It was only after meeting a friendly mare that she gained the opportunity to rise up in the ranks. Her agility and poise made her the go to star for most films. She quickly learned to read the room and made friends with a lot of ponies in high places. She is a very recognizable face and while some have commented on her resemblance to the famous Pinkie Pie, she knows how to deflect and distract (Her pinkie sense can sense ‘traps’, as in loaded questions). The monthly meetings are ones she generally misses but always pays for.
Note: CP has actually been to Ponyville once but quickly fled when she noticed Pinkie nearby. She was the one who pointed out that the spell seemed to connect all the Pinkie’s to the original in some way. None know what would happen if they were found out.
Artist Pinkie: AP is the youngest and the most naive. She has spent her life being taken care of and has a hard time getting things done generally. Unlike her sisters, she hasn’t changed much from the archetype Pinkie, being loud, random and generally annoying. Her only deviation is her love of art. She loves to paint and draw but isn’t good and managing her finances, giving away her paintings for free as opposed to actually selling them. As such, despite how popular and artist she is, shes basically broke half the time and lives off her part time job. BM and CP are constantly talking to her about being more aggressive about selling but she just enjoys making ponies happy. Her art can be found all over Equestria, from humble little galleries to the grand halls of Canterlot Castle.
Note: AP is the most noticeable clone to resemble pinkie though she chooses not to alter her looks too much. Only with the nagging of her sisters does she bother to disguise herself in any way at all.
Unknown Pinkie: U is the second youngest and is a bit of a mystery. None of her sisters knows what she does, though she is clearly well off. Not rich as CP of poor as AP. When asked, she just shrugs and saw she ‘makes ends meet’. Of the Five, she is the one who spent the most time alone, seeming to talk to herself often and sneak out late when they lived together. She’d always return with black eyes and bruised hooves. No one but her second eldest sister knew about her late night bouts but most knew she could kick ass when pushed and used her prehensile tail a lot more than her sisters.
Pinkie Noir: N is the second eldest and the most informed of the five. Unlike the others, she chose to learn about the world and use that knowledge to keep her sisters safe. She is a private eye but that’s mostly a cover for her real work. She won’t say what she does but with how often she comes home with magic burns and scars, her life is an adventure. This started when she began reading a noir crime novel she found in a dumpster somewhere. She took on the look and began her own private eye office. At first, things were slow but she soon started getting involved in all kinds of devious plots. Assassinations, coups and all kinds of stuff from what seems like a simple case of ‘find my cheating coltfriend’. As time went on, she grew cold and jaded, though not the same as BM. She was weary while N was wary.