Yes, Welcome to the forum. Those are quite a few to go through for ID. Just have a few minutes jumping in & out of the forum, so quick thoughts on some. 2. Does look like Haworthia cuspidata. 4. A. Is Aloe variegata on the right track with Haworthia pumila for 5. A & B. C. has been see listed by a couple of cultivar names, one being H. attenuata 'Wide Band' or 'Wide Zebra'. Nice Gloxinia! Just so you know, when writing plant names, single quotes are used on cultivar names. Species names are not capitalized. Common names or nicknames can use double quotes (but are not necessary). I believe all Bryophyllum have been moved back into Kalanchoe now. Cute pups, all! The Gasteria & Sans would require lengthy research. Sorry, I've no time for that now. Maybe I'll get back.

Hello, sorry I’m in a rush so will just say the pink variegated one looks like a type of Tradescantia, something that I wouldnt really consider as a succulent. Your English is just fine, trust me, I’m English and you write better than some I know! Perhaps add some location/zone info after your name, go to your profile and add it as your second name I think :-) Gill

I think 2 is actually Euphorbia x japonica. Not sure about 1, but it's also a Euphorbia as Rina said.

I do not know what the bugs are. Plantlets look ok. I wouldn't complicate rooting so much - I don't see advantage of using paper towels; as you found , it could e annoying trying to get the roots detangled (I never heard of this method). I like it as simple as possible. Most of the time, I just lay leaves on surface of pretty gritty mix and they root and grow in it. I transplant them easily when they are big and start interfering with each other. These were transplanted recently since pot was getting too full:Bunch of leaves started in same pot & gritty mix - 2nd photo as they are now; soon to be given individual pots: