The Class Tier lists that developed around 3e and PF1 mostly involved showing the class balance impact of full casting, prepared casting, and versatility to different encounters
Different problems, combat or otherwise, yes. The first two 3.5 Tiers prettymuch were by casting method: higher day-to-day versatility of prepped casting edging out the higher round-to-round versatility of spontaneous. Third Tier was, IMHO, more where class designs should have been aimed: good versatility, but not always dominant - a party of different Tier 3 classes could potentially all participate meaningfully, most of the time, not just swing a spotlight around. Tier 4 were too-narrow(suitable for spotlight-balance), but not deficient, 5 deficient, and 6 reserved for mechanically-borked class designs - again, to simplify.
The OP's look nothing like that, rather they read like a newb's guide to picking a fun first class while they learn the game - and an over-enthusiastic one, at that.
Since 5e neo-Vancian
combines The versatility of prepped & spontaneous casting, it virtually re-defines Tier 1, while leaving it to the same classic classes. Tier 2 obviously belongs to the remaining (spontaneous or 'known') full casters. Tier 3 to fractional casters. And, unless you count unfortunate non-casting sub-classes, thats about it.
Relative to 3.5 a rising tide that's floated all boats - and miraculously raised some sunken ones, too.