Akritas

Welcome to the forum @Akritas, I'm new here too, and I share with you, and with many other members this forum, the main attraction of the Fujifilm X-Series size and very attractive looks! 
TL;DR: any X-Series camera (including the older, significantly more affordable ones) + XF35mm is a great place to start. 
I am a hobbyist as well, and used to shoot Nikon (D90 then D7000). I "converted" to Fujifilm in 2015 when I bought the X-T1 with the 18-55mm kit lens. My love to the X system has since grown. And the bulky Nikon system is gone.
I carry my X-T1 camera everywhere, I sometimes annoy myself carrying it around without the finding the ability to use it. But it is one of those things: you use it once, you love it, and you carry it around everywhere because you don't want to miss an opportunity to use it.
I recently bought the X100F, because why not. Actually, for two reasons. The first one is that I wanted to experience the liberty of limiting my choice (rolling eyes). The second reason was the even smaller form factor. Let me explain. I love my X-T1, and my favorite lens is, hands down, the 35mm f/1.4. But since I have 4 other primes, its takes me sometime to decide which prime to take with me. So eliminating that choice by the fixed lens X100F is kinda liberating.
So, is buying the X100F worth it? Well, after using the X100F for a few days, I realized that I have an almost equivalent focal length XF lens, the 27mm pancake lens that I can use with my X-T1. So the question became, will an X-T1 + 27mm pancake lens be comparable in size with the X100F? The answer is YES. So I sold the X100F, and started using the X-T1 + 27mm pancake lens until the XF27mm failed, now I'm back to the game of wasting time deciding which of my primes to take with me lol. However, I find myself falling back on using the X-T1 + 35mm f/1.4 more than the rest of my lens due to its size, focal length, weight, and quality of images.
 
My XF primes are: 
35mm f/1.4 56mm f/1.2 27mm f/2.8 90mm f/2.0 23mm f/1.4 

I know the film simulations are available in Lightroom since mid-2017. I do not know about the advanced filters, however. I am not a Lightroom user; perhaps a Fujifilm/Lightroom user here on the forum can stop in here for a comment.

Akritas, I don't think any Fujifilm X camera fails your needs. If I were to shoot mostly street and landscape. I would select one of the rangefinder form factor bodies for its small size, and some prime lenses such as the 23 mm, 35 mm, or the 27 mm pancake lenses, again, for their small sizes. The X100x series have an extremely loyal following among street photographers, and of course lens selection doesn't happen there. On interchangeable lens bodies, the zoom lenses are usable for these purposes, but not quite as small.
To make a good selection, I think you need to define some selection criteria, such as:
do you prefer fixed or interchangeable lens?  do you wish to shoot much video? (Then you need the higher power of the X-T3, X-T30, or the X-Pro3) do you prefer a rangefinder shape or an SLR shape? do you need what I call "Pro Features", which are weathersealing and dual card slots? (Then you need the X-T3, X-Pro3 or the X-H1) what level of mobility do you need for your LCD screen? (The X-E3 screen is fixed and the X-Pro3 screen well, disappears, others articulate) what do you just simply like?  do you have budget constraints? The grand-daddies of high-performance Fujifilm X bodies right now are the X-T3 in SLR form factor, and the X-Pro3 in the rangefinder form factor. My personal recent choice was on the lower end because I shoot no video, and as an amateur, if the weather gets too bad, I take it indoors. The surprising thing to me is the fact that I feel like I gave up nothing in image quality, camera/lens quality, or ease of operation at the lower end of the range. I bought an X-E3, and now that I've used the system for a while I can say with certainty that if I had to replace it today with an unlimited budget, I would choose the X-E3 again, maybe in black this time instead of silver.
I, too, migrated from Nikon, albeit film, and I don't miss it a bit. I can customize my Fujifilm to operate like the familiar Nikon, but in a system about a third the weight and size.
Good luck on your selection, and I hope you come to enjoy photography with your Fujifilm gear as much as I do.

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