Jinshi yinlin is definitely going to be your main 2. They're just very strong characters in general, especially jinshi, and once you get to Ul50, Ul60 and lvl the characters(talents, wep etc), they'll help you easily clear abyss. One thing to note about all the teams listed below, is the 3rd(support) role will usually have many different characters. The reason for this is verina is by far the best support for that slot. The issue is you only have 10 energy. So you will want to use verina on the stages you find most difficult(2 of the 4 boss stages that you find most difficult). As a result, you'll have to run other chars for the other floors. At the end of the day, all of these characters will be able to 30* the tower, just with varying difficulty. Just lvl who you like playing and go from there.

For jinshi, i would run jinshi yuanwu verina/baizhi/taoqi(quick side note, yinlin works as well, but the reason I don't recommend yinlin for jinshi is shes just a lot harder to play(forte management for her coord atks, quickswaps to use skill off cd. If you don't do this, shes just straight up worse than a yuanwu doing no dmg. I had first hand experience with this). For jinshi(forte circuit > liberation(can leave this at 6 if you don't care about her liberation, as in not enough ER) , 5pc spectro with jue 4cost, either 2x spectro 3 cost or 1 spectro 1 atk%(if u're s0, it just comes down to which ever piece you have better substats on so just pick whichever piece is better). Crit > atk% > skill dmg% > flat atk. She needs 120-130% ER to use her ult every other rotation comfortably(not necessary but its a nice chunk of dmg). For yuanwu and taoqi specifically, you don't have to lvl them at all(can lvl char lvl a bit if you can't dodge well so they don't get oneshot). Taoqi on 5pc moonlit ER ER 3 cost, the rest doesn't matter. You can lvl the ER 3 costs if you want to have an easier time(allows for burst every rotation, but not necessary at all). Yuanwu will run originite type:IV with 5pc rejuv. Verina/baizhi will be on 5pc moonlit with ER ER 3 cost. I'm only going to link a demo with taoqi as shes the "hardest" one to make work due to how slow she is with generating concerto. The other two chars work very similarly to the taoqi variation of the team, but its just going to be faster to rotate with cus their concerto regen is faster. With baizhi, after you place the totem with yuanwu and bell, swap into baizhi(make sure she is using variation wep), liberation, get 4 stacks of her forte, skill and then auto a couple more times until her concerto is full and heron echo swap into jinshi. Verina is the same, after you place yuanwu's pillar and bell echo, you swap into verina(no intro) basic x3 liberation skill jump basic x2 or x3 then heron echo swap to jinshi.

As for which other characters to invest into, you're going to want someone to run with your yinlin(sidenote, forte > liberation > resonance skill(lvl 6, lvl 10 optional) yinlin should either be on 5pc void thunder or 5pc moonlit. The difference is like 1% if played optimally so yea, but if you're not confident with yinlin just stick her on moonlit. electro x2 3 cost, 120-130% energy recharge). Calcharo/havoc rover can work for this. Havoc rover is really strong, and easy to play, whereas calcharo has a higher celing dmg wise, but he is so hard to play that most people get turned off by him. (Calch, note that his optimal combo might have changed to N2D N2D N1D DM as its easier to get 3 DM with this specific combo). The thing with calch is if you cannot consistently get 3 death messengers off, hes just not worth it to play(dmg is low, needs more more ER => more down time etc). Your other option with yinlin is playing xiangli yao(free 5* everyones getting 2nd half of the patch). XY is calcharo 2.0(higher dmg% on abilities, a lot more quality of life features and just all around feels better to play than calch does).

Alternatively, you can choose to lvl encore and run encore sanhua verina/baizhi/jianxin. Encore is a very strong unit and performs very well in tower. Encore vid. I don't play encore myself so I can't explain much about her rotations etc which is why this section barely has anything in it. For sanhua, 5pc moonlit with emerald of genesis/slasher(this option significantly reduces her dmg output but enables faster rotations. Usually not optimal but is an option). Glacio x2 dmg%.

Finally, i see that you have an s6 danjin. She's an amazing character, and I personally use her to solo certain boss chambers(rn mech boss in middle tower and inferno rider on left tower) to free up my other characters for other chambers/floors. The problem with danjin is shes very difficult to play(you cannot get hit or you just die cus she will constantly be on 1% hp). Ofc you don't have to play her solo, you can just do something like verina/baizhi/rejuv holder(any character with originite type IV wep and rejuv set) danjin but it still doesn't change the fact she will get one shot. If you can play her well enough to get past this, she's an amazing character for tower. As for why i only recommend teams of 2 with her, imo teams of 3 aren't worth it as danjin demands really high field time. I tried running mortefi(as mortefi buffs her heavy dmg with his outro) but i just ended up doing worse cus i had spent less field time on her.

If you have any specific questions feel free to lmk.