I can make some suggestions, but to get many more, try starting a new thread with a title specifically asking for recommendations of 4-pin PWM fans with ARGB lights in the 120mm size. That will get you so many ideas it may take some time to sort through!
First, criteria in choosing fans. On makers' websites most of these specs should be shown. If not, be skeptical of the fan.
Size: 120 mm to fit your spaces. That is the width of one SIDE of a square fan frame.
Fan MOTOR type: PWM preferred (4-pin connector)
Cabling: should have TWO cables, one each for motor and lights, and each with "standard" connectors on the ends.
Lighting type: Addressable RGB (not plain RGB), also called ADDR RGB, ARGB, Digital RGB. These have female connectors with THREE holes (looks like it had 4 holes, but one is blocked off) and carry a power supply of 5 VDC. Photos almost always show these with rainbow lights, whereas the plain RGB sill be shown with only one colour throughout the fan.
Performance specs
Air Flow (max at full speed, unimpeded air flow path) usually in CFM the higher the better. Conversion factor 1.00 CFM = 1.70 m³/hr if it's spec'd in those units). Usually 50 to 65 CFM, VERY high flow up to 100 CFM but noisy.
Pressure (full speed max backpressure resistance to air flow it can push against before there is zero air flow) in mm of water, typically 1 to 2 for case ventilation fans (your application). Should be upper 2's to 4 for rad fans and heatsinks, NOT your need.
Noise at full speed in dBA, lower is quieter. Typically 15 to 25, may be over 30 for very powerful fans.
RPM (max rotational speed) is less important - focus instead on air flow rating.
Voltage should be 12 VDC max for the motor, 5 VDC for the lights.
Current draw max in amps (maybe mA). SHOULD be specified separately for the motor and the lights, because they draw from different sources. Typically 0.10 to 0.25 A for fan motor; a normal mobo fan header can supply up to 1.0 A total load for all motors attached to EACH header. For lights, one lighting unit (one fan frame) typically is 0.2 to 0.5 A and the header can supply up to 3.0 A. Some headers also carry a spec for the max number of LED's on one header, not usually a limit for you.
Watts: sometimes for lights or motors the electrical consumption is specified in Watts (Watts = Volts x Amps) instead of each component separately.
Fan Lifetime: hard to judge. The Warranty period can be a good clue, and user comments can help sometimes. SOME makers (e.g. Noctua) have well-established reps for long life, and some DO last a long time but are not widely recognized as such.
Of these, Size must match the mounting location, Air Flow is most important, Pressure is important mostly for fans on rads and heatsinks but not for case ventilation, Noise is your own preference, RPM really does not matter. Voltage is standard for almost all fan motors (you can get odd ones for special uses), but Voltage IS vital for the LIGHTS. Current or Watts becomes important only when you are combining several units on one header using a Splitter.
So, OP, for your situation you should concentrate your search on: 120 mm size, 4-pin PWM fan motor, 3-pin ARGB lights in the frame, and check that the fan does not use some non-standard connectors. Then you can narrow down according to price, noise, perceptions of quality and reputation of the maker's products, user comments, and perhaps your preference (if any) of fan colour.
I like Noctua fans, BUT I do not believe they make ANY with lights in their frames. Several makers known for lighted fans come to mind: Corsair, Cooler Master, Phanteks (odd connectors, but supply adapters), beQuiet, Thermaltake, Arctic, Deepcool. Each sell several lines, SOME of which are PWM fans with ARGB lights, and each line has slightly different features. Often you can get fans in three-packs or singles, and some of the three-packs come with accessories (like Controllers) you may not need.
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