I'd just treat the Zhimaway as regular ships whenever they're launched, but I'll admit that's because I don't remember squadron rules and they're cruiser-sized as individual ships. As mentioned earlier in the thread, they're 30k-ton ships, and they have a big spinal gun (Class M Meson), 2 50-ton particle bays, 3 50-ton fusion bays, and 10 50-ton missile bays, plus what looks to be 30 triple beam laser turrets in 3 batteries of 10 turrets and 120 double sandcaster turrets arranged into 8 batteries of 15 turrets each (it's said to have 150 turrets, and that works mathematically even if it feels a bit weird from a design standpoint). They're M6 and pretty decently armored.
Changing topics, I don't know whether these would count or not, but Fighting Ships of the Shattered Imperium has Tenders and Riders for TL-14 and TL-15, with two riders at each tech level, one with a particle spinal and one with a meson spinal. All of the Riders are 30k dTons. Like everything else in that book, they don't have names, but they could be adapted for use as classes that might be mentioned in sources without details.